Katsuhiro Harada, producer of the SoulCalibur series and the Tekken series appears as a bonus character in a Quick Battle challenge, using the Devil Jin style moveset. Defeating him will unlock the achievement "Pursuit of Obsession". His theme music is from the Cathedral stage of Tekken 5, his appearance is very similar to Heihachi from Tekken, and his profile image shows him without sleeves, even though in-game he wears a longsleeved gi. His name appears in game as "Harada_TEKKEN" - the same as his Twitter handle.