1.Is Knuckles Chaotix a Sonic Team? 2.Why did sonic team took out the chaotix? 3.Are the the chaotix sonic team characters?
1) It's a Sega of Japan game.
2) As the rules state, we don't speak for Sonic Team.
3) They're most likely Sega of Japan characters since they've only appeared in SoJ games.

--True Red