Star Fox Zero has a side mission in that can be accessed in Titania after obtaining the Landmaster's Flight upgrade. In this mission, you play as Peppy Hare, facing off against the Salvadora alone. Notably, every time Peppy performs a barrel roll, he literally shouts "barrel roll!". This is obviously a reference to his iconic line from Star Fox 64, "Do a barrel roll!" that has become an infamous internet meme over the years.

It's worth pointing out that this only occurs in the Western version of Zero, as Peppy remains silent even when barrel rolling in the Japanese version. This is because "Do a barrel roll!" never really became a meme in Japan, as Peppy has a different, less iconic line in the Japanese version of Star Fox 64 when instructing Fox how to roll: ローリングで弾くんだ!, which seems to translate to something along the lines of "use a rolling technique!".