Also, Don is always [tornado fang]ing broken in TMNT games, which is yet another reason he's so awesome.
NOT the case in TMNT Tournament Fighters, especially the case with the SNES or Genesis versions (been a while since I played the NES one).
In the SNES version, Don was alright, but Raphael and Michelangelo were CLEARLY the best turtles in the game, and easily amongst the top tier of the game, overall. Between Raphael basically being SF2:CE Dictator, minus head-stomp and add a fireball, and Michelangelo being a CRAZY-GOOD Shoto/Charge character, it was no contest. For all the times that Mikey and Raph were low-tiered in other games (ESPECIALLY the first NES game), they really came into their own in the SNES TF release.
Then there was the Genesis release; an absolutely horrid, utterly silly game. Again, in that game, EVERYBODY had an infinite, stemming from just using their throw animation...except for Don! That automatically makes Don bottom tier in that game, for that reason alone!