Knuckles Chaotix is a game where Sonic is mysteriously absent (possibly because of where he wenti n the pink portal at the end of Sonic Mania?) In the Knuckles & Knuckles ending, the sound it plays is from Knuckles Chaotix Knuckles design in Sonic Mania looks suspiciouislly like a Sonic 3 styled version of Knuckles' Chaotix design In Sonic Mania when you get hit instead of rings scattering everywhere, they explode outward in a 3D Effect, the same
