Sonic Genocide

This is the only one that doesn't take too many elements from any game in the series. The story is as follows: Eggman is fed up with the numerous defeats he's suffered at the hands of Sonic and Knuckles, so he hears of a group of mercs named Chaotix and hires them to kill Sonic, so the trio of Mighty, Vector and Espio fight Sonic and Knux, but the only one who even comes close to even harming them is Espio, who after being beaten by the two, goes insane and tries to regain his honor by killing them both. This film would mark the first appearance of Super Sonic.