Franchise: Sonic The Hedgehog

During the reboot of Archie's Sonic the Hedgehog comics, several characters and aspects adapted into the comic from the 1993 Sonic the Hedgehog cartoon (commonly referred to as "Sonic SatAM") were noticeably altered for a variety of factors:

• Ixis Naugus (referred to simply as Naugus in the show) was changed to "Walter Naugus". His species (which was never actually stated in the show, though the pre-reboot comics depicted him as a rhino-bat-lobster hybrid) was changed to that of a troll, with a tail being added to his design to help make him look as such, alongside his attire being updated to more resemble a warlock. Additionally, despite what was initially believed, the term "Ixis" was originally applied to Naugus' cartoon production materials, and was not invented by former writer Ken Penders. This meant it was still usable in the comics, and was later given to the deity worshipped by the troll species.
• Muttski was changed to "Ben "Mutt" Muttski", and was changed from a non-anthropomorphic dog to an anthropomorphic one. Notably, his new name was given in honor of Ben Hurst, the main writer of "Sonic SatAM" who sadly passed away in 2010.
• Snively Robotnik (referred to simply as Snively in the show) was changed to "Doctor Julian Snively", with his first name being a nod to "Sonic SatAM", as Dr. Robotnik's original name in the show was Julian. According to Ian Flynn, he is no longer related to Dr. Eggman in the reboot due to Sega's mandates not allowing other media to invent family members for the main "SegaSonic" cast. Ironically, while his half-sister Hope Kintobor was removed from the reboot, Snively inherited her position as G.U.N.'s R&D Specialist.
• Maximillian Acorn (referred to simply as "The King" in the show) was changed to "King Nigel Acorn". His name was most likely changed due to being coined by former writer Ken Penders. Notably, his new name, speech pattern and mannerisms are shared with Nigel Thornberry from the animated series "The Wild Thornberrys": Nigel was voiced by British actor Tim Curry, who also voiced the King in "Sonic SatAM".
• Nicole the Holo-Lynx's new backstory in the reboot has her being created by Dr. Ellidy in an attempt to digitize the consciousness of his dying daughter Nikki. This may have been loosely inspired by Ben Hurst's plans for the cancelled third season of "Sonic SatAM", where it would have been revealed that Nicole was originally a normal girl until she was tricked by Dr. Robotnik into having her entire personality transferred into a computer satellite.
• Although the Wolf Pack originated from "Sonic SatAM", the only member of the group who was not created by Ken Penders was their leader Lupe the Wolf, who also originated from the show. As such, when the comic was rebooted, she was the only member of the group to be carried over.
• Aside from King Acorn, the only parent of a "Sonic SatAM" character to make it into the reboot was Sabina, the mother of Dulcy the Dragon and herself a character from the show. However, while Ian Flynn did confirm that she was still Dulcy's mother in the reboot, she never actually appeared in the comic prior to its cancellation. Additionally, given that Dulcy refers to her with present tense, it's likely that Sabina is still alive in the reboot, whereas she had died in the original continuity.

In 2022, Logan McPherson, the director of the animated series "Sonic Prime", stated that the show was canon to the games, drawing upon their existing mythology. This would make Sonic Prime the first television series based on the Sonic franchise to be considered canon to the mainline series. Ian Flynn would further support this claim, revealing that he knew when exactly in the series timeline the show took place in, but would not reveal it until after the show ends, while noting that something happens in the show to make it clear that it is indeed canon to the games. In 2024, after the release of Sonic Prime's third and final season, Ian Flynn finally confirmed the show's status in the overall Sonic timeline: aside from taking place sometime after the events of Sonic Advance 3, the show's placement is considered moot due to the ending Spoiler:having the show wipe itself out. In response to complaints regarding this outcome, Flynn claimed that its placement in the canon was intentionally vague, and the show being canon to the games at all was not his decision due to only being involved in the animated series as a consultant. He later claimed that he and other parties had made efforts to flag the show's inconsistencies early on in production, but that many of these efforts were flat out ignored. He noted that there was not an easy way to brush these issues aside, but also made a point that there was an effort to do so.

In the 41st issue of the IDW Sonic the Hedgehog comic book, Sonic taunts Dr. Eggman with the nickname "Baldy McNosehair," to which Eggman responds with "That's not funny! It's never been funny! It's never going to be funny!" This is a reference to the YouTube channel TeamFourStar and their web-series "Dragon Ball Z Abridged". Specifically, it references the video "DragonBall Z KAI Abridged Parody: Episode 2" in which Krillin dubs himself, Gohan, and Vegeta as "Team Three Star", and Vegeta yells the same response.

On April 8th, 2022 (the American release date for the film "Sonic the Hedgehog 2"), former Archie Comics writer Ken Penders revealed that he was contacting his legal team in regards to the Echidnas and their backstory featured in the film. According to Penders, both Knuckles' unnamed father and the workings of the film's depiction of the Master Emerald were derivitive of two of his characters, Locke and Enerjak. Despite the fact that the powers of the game version of the Master Emerald had been established back in 1994 with the release of Sonic & Knuckles, Penders has claimed to have legal ownership over the ideas he created in 1996. However, as of March 2024, no lawsuit has materialized.

"TailsTube" is a webseries that began airing on March 22, 2022. Described as a "fun and informative, Tails-hosted show about all things Sonic", the series is hosted by a VTuber version of Miles "Tails" Prower, as he answers questions from fans about the Sonic the Hedgehog franchise, often featuring special guests from throughout the series. The series is notable for explaining various aspects of the series' lore. For example, the first episode debunks a popular fan theory that claims that Sonic's world and Earth are two separate planets, and the fourth episode confirmed the existence of a multiverse in the series, as well as establishing that "Classic Sonic" and "Modern Sonic" are not separate entities from alternate dimensions, instead being the same character's past and future variants. The sixth episode also sees Tails mention Jewel the Beetle and the Restoration, two prominent parts of IDW's Sonic the Hedgehog comic book series, further connecting it to the game series canon.

In August 2016, Scott Fulop, a former editor and writer for Archie's Sonic the Hedgehog comics (whose notable contributions include the characters Mammoth Mogul and the Fearsome Foursome), began pursuing legal action against Archie Comics for the unauthorized use of his characters and reprinted stories. He was inspired to do so by fellow former writer Ken Penders, who had also infamously sued Archie for similar reasons. However, on September 5, 2017, Fulop ultimately lost his lawsuit.

On June 23, 2016, Sega released a YouTube video titled "25 Years of Sonic the Hedgehog!", a video going through an abridged timeline of the Sonic franchise's games on the anniversary of the first game's North American release. Strangely and controversially for a celebratory video, the video makes multiple snide remarks towards the games featured, some that are innocent in nature (such as Sonic the Hedgehog 3's description mentioning the "Knuckle Chuckle" meme and Sonic Heroes' description referencing the infamous "Look at all those Eggman's Robots!" translation error) while others very directly mock flaws and criticised elements of the games, such as Sonic 3's referencing the "barrel of doom", Sonic 3D Blast's description poking fun at how the Flicky AI would run away from Sonic, 2006's Sonic the Hedgehog not even receiving a description and simply showing its loading graphic, and Sonic Colors' description stating that it is where "Sonic in 3D finally finds its footing", a statement that is technically true when looking at critical reception, but tends to aggravate fans of 2000s-era Sonic games.

In a post titled "SONIC THE HEDGEHOG: One Year Later...", Karl Bollers (a former writer for Archie's Sonic the Hedgehog comics) revealed numerous plans that he had intended to include in the comics following Issue #134 that were never used, such as:

• Sonic and Amy becoming a couple after being stranded at sea together, keeping it a secret from Sally.
• Tails reuniting with his parents by traveling into space on a modified Tornado.
• Amy's origins being explored in a fuller adaptation of Sonic the Hedgehog CD.
• Knuckles departing Angel Island after learning that his presence exposes the location of the Master Emerald, going on a global pilgrimage to learn martial arts and battling a Dr. Eggman controlled-Monkey Khan while himself under the control of the Iron Queen before discovering the Master Geode.
• Sally being a pawn in a villainous plot by the corrupted Source of All and Ixis Naugus to prevent the future first previewed in "Sonic In Your Face!".
• Bunnie and Antoine breaking up due to a change in Antoine's personality, with Bunnie's origins later being explored and her true name being revealed as "Scarlette O'Hare" (which may have served as the inspiration for Scarlette Rabbot from Sonic Universe's "Fractured Mirror" story arc, and Bunnie's codename when she was in the Metropolis Egg Army in Issue #255).
• Antoine gaining his scar due to an accident with a knife and becoming a villain after allowing himself to be possessed by a corrupted Source of All in hopes of winning Bunnie back.
• Rotor retiring from field duty in order to pursue a role analogous to that played by "Q" from the James Bond franchise.
• The Source of All surviving Robotropolis' destruction and reconstituting itself in a remote mountain range, where it began to exert control over King Max, brainwashing the Arachne Clan and another group of Spiders known as the Strand, and possessing Antoine while under the control of Ixis Naugus.
• Locke and Lara-Le putting aside their previous disputes to help raise Kneecaps after his father Wynmacher ends up in the Egg Grape Chamber.
• Dr. Robotnik kidnapping Hope Kintobor under the pretense that he is the only correct choice to be her legal guardian, while using her as bait to lure in Shadow.
• Ixis Naugus attempting to return by transforming Max's body into a duplicate of his own, only to be thwarted by the destruction of the Crown of Acorns.
• Mammoth Mogul beginning to age rapidly due to his original Chaos Emerald running out of energy, forcing him to seek out alternative sources through illicit archaeological expeditions and hiring mercenaries like Nack the Weasel. The Master Geode, a powerful gemstone that would fulfill Mogul's needs, would be contested by him, the Iron Queen, Robotnik, and Rouge the Bat.
• Nate Morgan surviving the destruction of Robotropolis and being de-Roboticized by the Bem, returning as Coconuts' amnesia-addled ally, who creates a new Metal Sonic, Metal Amy, Metal Knuckles, and Tails Doll that are mistaken for Robian versions of the heroes.
• Snively taking up a fifteen foot-tall mechanical battle suit and the alias "Skarkus" in pursuit of revenge against Robotnik for leaving him alone against the Xorda, leading to an alliance between him and Shadow.
• A.D.A.M. and Nicole becoming romantically involved, leading to A.D.A.M. seizing control of the Shadowbot army and leading them from New Megaopolis to Knothole.
• A new Dingo Regime leader named Colonel Mange being introduced, with Croctobot, Jack Rabbit, and Gala-Na being reintroduced as Robotnik Sub-Bosses over Downunda, the Great Desert, and Albion. This would have led to the disappearance of the Downunda Freedom Fighters and a confrontation involving the Mercian Freedom Fighters.
• Evil Sonic coming to enjoy impersonating Sonic and enjoying the love of his parents and adulation of his people, leading him to plan to eliminate Sonic and permanently take his place.

Additionally, in the aftermath of Ken Penders' lawsuit against Archie Comics, Bollers has confirmed that he now owns the rights to all the characters he created for the comics, such as Mina Mongoose, Ash Mongoose, and Hope Kintobor.

Lanolin the Sheep, a character introduced in IDW's Sonic the Hedgehog comics, was created by artist Adam Bryce Thomas as a background character in Issue #2. He would continue drawing Lanolin in subsequent issues he illustrated for, often with a new look. Comic writer Ian Flynn would eventually confirm her name on Twitter. She even appeared in an early draft of Issue #30's A cover (drawn by Thomas), but was edited out in the final version. Starting with Issue #57, Lanolin began to have a supporting role in story arcs: according to Ian, this is due to how her appearances had evolved to the point of gaining a role in the story, and her increase in prominence led to a more developed personality. By her own admission in Issue #58, she is "bossy and inexperienced", being rather new to her role as a leader. Despite this, some fans have criticized the character for having a tendency to act as if she is just as experienced as her peers (i.e. critiquing Silver in Issue #63 despite having no experience with psychokinesis, and her interactions with Tangle in Issue #62 giving the impression that she had a genuine problem with her, despite the scene's comedic nature). This has resulted in comparisons to Sally Acorn, a character from the 1993 "Sonic the Hedgehog" cartoon who was a main character throughout the Archie Sonic comics, due to their status as no-nonsense leaders able to keep even Sonic in line. These similarities also led some fans (particularly those who don't like Flynn's writing) to accuse that Lanolin was an attempt to replace her despite having gone on record stating that he wanted to incorporate Sally and the Freedom Fighters into the IDW comics.

Archie's Sonic the Hedgehog comics introduced an original character named Geoffrey St. John, who at one point in the comic was in a romantic relationship with Sally Acorn, a character from the 1993 "Sonic the Hedgehog" animated series. This has been met with controversy from fans, because Sally was, at the earliest, 15 years old at the time of the relationship. While Geoffrey's age was never stated in the comic leading some to argue that a seemingly nonexistent age gap would be irrelevant, his creator Ken Penders claimed in 2015 that the character was 21 years old at the time of Sonic the Hedgehog Issue #46, which released in May 1997. In the Sonic-Grams fan letter section of that same issue, one fan letter asked if Sally is 14 or 15 years old, with the editor Justin Freddy Gabrie confirming she is 15 (it should be noted that while Gabrie incorrectly lists the wrong age for Bunnie Rabbot in this response implying others could be wrong, Sally's age is consistent with her being the same age as Sonic throughout the comic). All of this information is made significantly worse when Geoffrey is shown making out with Sally during the same issue, which they also did in other issues around this time. To complicate this further, in Issue #20 of the spin-off comic Knuckles the Echidna, which released in January 1999, it's shown that Geoffrey is older than Sally's older brother Elias Acorn, who was 21 at the time of the relationship, through two scenes. The first is when Geoffrey calls him a "kid" in the present, and the second is through a flashback showing Geoffrey as a physically older child than Elias, who was 5 years old in this flashback. The two aforementioned issues were co-written and solely written by Penders respectively, meaning that even if his original claim of Geoffrey being 21 was incorrect, it implies that he retconned Geoffrey to be older than that at the time, making the age gap larger.

This controversy worsened even further when Penders revealed in 2019 that he had planned at some point for a story involving Geoffrey taking Sally's virginity. While he acknowledged that this was a story that ultimately couldn't be told in the comic, as content found in the series had to remain within the realm of a G-rating, he attempted to justify the relationship in the context of a historical drama setting by saying:


However, considering the cited source material, this justification is fundamentally wrong as the actual implied age gap would be larger than the 4 years Penders suggested (Sally's 15 to Geoffrey's at least 21), leading fans to accuse Penders of making the character a pedophile, and by extension accusing Penders himself of being a pedophile.

Ian Flynn has stated that the IDW Sonic the Hedgehog comics are considered canon to the mainline Sonic games on his Bumblekast podcast. This would be supported by Chris Hernandez, one of the lore managers of the series: in the seventh episode of the seventh season of "Sonic Official", he reiterated that the comics were indeed canon and take place after the events of Sonic Forces. It's also worth noting that, unlike the previous comics by Fleetway and Archie, certain aspects of the IDW comics have been referenced in the Sonic games: original character Tangle the Lemur is briefly mentioned in Sonic Frontiers, and she (as well as other original characters Whisper the Wolf and Surge the Tenrec) has appeared in the mobile games Sonic Dash and Sonic Forces: Speed Battle.

While the comics do largely stay in line with the game's canon, there is one notable exception: the events of Team Sonic Racing in regards to the comics. Ian Flynn originally claimed that the events of Team Sonic Racing take place at some point after the Metal Virus Saga (meaning after Issue #32), but before Issue #43. Since then, it has been stated that it could also have taken place before the events of Sonic Forces, or it could have not happened yet.

Despite being synonymous with the "edgy" 2000s era of the Sonic franchise that Sonic Frontiers hearkens back to, Shadow the Hedgehog is completely absent from the game. No official comment has been expressed on why Shadow is omitted, however, a month before Frontiers' launch, the game's writer Ian Flynn would quote retweet a screenshot of an interview with writers for the Sonic Boom cartoon claiming that Sega are restrictive on Shadow's portrayal to the point where it's preferable to omit him in spite of his fan-favorite status than work with Sega's restrictions, with the caption "[quote-retweeted] without comment".

Dr. Starline the Platypus from the IDW Sonic the Hedgehog comic series is inspired by a glitch character from Knuckles' Chaotix - a silver, red and charcoal Knuckles recolor, known by fans as "Wechnia", but by the game itself as "**********", seemingly based on unused data for Tails. Starline's color scheme is taken directly from Wechnia, his name is a literal take on the name "**********", (or "star-line") the black streak in his fur resembles the red streaks all over Wechnia's fur, and the choice of a platypus seems to be inspired by how certain Wechnia sprites would make the bottom of his muzzle yellow and loosely resemble shading for the underside of a flat bill, alongside platypi being Australian like echidnas.

In 2017, the official Sonic the Hedgehog Twitter account posted a parody of Marvel vs. Capcom: Infinite's character select screen, with various characters from throughout the Sonic franchise in place of the game's playable roster. This was likely meant to poke fun at Infinite's roster, which many had described as "mediocre".

In Issue #48 of the IDW Sonic the Hedgehog comic series, pages four and five depict several Central City citizens with designs that reference characters from other franchises, such as:

• Wally from Where's Wally?
• Reigen from Mob Psycho 100
• Conan and Ran from Case Closed
• Wreck-It Ralph and Vanellope von Schweetz from Wreck-It Ralph
• Crinkly Wrinkly from OK K.O.! Let's Be Heroes

Incidentally, the Sonic series has crossed over with both Wreck-It Ralph and OK K.O.! Let's Be Heroes in the past.

The character of "Ugly Sonic" in the 2022 film Chip 'n Dale: Rescue Rangers is based on the infamous first design of Sonic the Hedgehog featured in the first trailer for his 2020 film. Voiced by Tim Robinson, Ugly Sonic acknowledges the mockery of appearance (especially his realistic humanoid teeth) and uses it to find new work.

According to the director Akiva Schaffer, the company that provided the effects for this film, MovingPictureCompany, also provided the CGI for the 2020 Sonic film, meaning for Ugly Sonic, they had to "repeat their mistakes on purpose this time."

Interestingly, Ugly Sonic wasn't originally planned to be in this cameo; Jar Jar Binks from Star Wars was initially meant to be featured as the character acknowledging his mockery.

Some of the names of the Arcade Shop missions in Lost Judgment which are unlocked through playing Sonic the Fighters are references to aspects of the Sonic franchise.

The missions for beating Sonic, Tails, Knuckles and Amy are all named after their themes from Sonic Adventure or Sonic Adventure 2: Live and Learn, Believe In Myself, Fighting Freak and My Sweet Passion.

The mission for beating Fang the Sniper is titled Knack For Trouble which could be a reference to both Fang's original Western name Nack the Weasel as well as his debut game Sonic the Hedgehog: Triple Trouble.

The mission for beating Bean the Dynamite is titled Mean Bean Machine after the 1993 Sonic-themed Western localization of Puyo Puyo, Dr. Robotnik's Mean Bean Machine. Ironically, Puyo Puyo did not appear in Lost Judgment despite being in it's predecessor, Judgment.

Finally, the mission for beating Espio is titled Chameleon Detective after Espio's role as a detective starting with Sonic Heroes. It could also be a nod to the Lost Judgment's protagonist Yagami being a detective who often needs to don disguises to blend into places.

The live-action Sonic the Hedgehog movie was originally slated to be released sometime in November 2019, but was delayed to February 14th, 2020 as a result of the reception to the film's debut trailer released on April 30th, 2019. The main cause of the backlash being that the film was planned to feature a humanoid redesign of Sonic that was so negatively received by fans and audiences alike that the film's team hired artist Tyson Hesse, who had previous experience with the Sonic franchise, to make a more visually appealing redesign for the final movie that was more positively received and incorporated into all previously-released film footage.

In an interview, Naoto Oshima was asked if the blue birds were a direct reference to the game Flicky. Oshima said yes, and also mentioned that he asked game's designer Yoji Ishii's permission to use Flickies in his work.

In 2012, Ken Balough announced that Big the Cat would be retired from the franchise for the time being as they could not find a good use for the character, and all things that they already tried didn't work out for him. This however did not stop Big from making cameo appearances in Sonic & All-Stars Racing Transformed, having a trophy in the 3DS version of Super Smash Bros. 4, having a spirit in Super Smash Bros. Ultimate, being playable in the mobile games Sonic Runners and Sonic Forces: Speed Battle, and even making a full appearance in Lego Dimensions and Team Sonic Racing. Big was eventually reintroduced to the mainline Sonic games in Sonic Frontiers.