Indeed I am. You know why? Because I recall a few people saying that they wouldn't mind an overpowered character if they didn't always look so goddamn crappy, and that's just what all the sprites I ever make are, goddamn crappy.
The original concept behind Overdrive was just Sonic with multithok, but I decided I'd take it a few steps further. It was also an opportunity to field test A_CustomPower.
I didn't anticipate much actual critisism in this WAD, so I'm not going to go out and say "if you don't have anything constructive to say, don't post." Far as I'm concerned, Sonic Overdrive is far more fun to play with than any character of equal gameplay, but crappily recolored sprites, and I'm fairly certain I'm not the only one who thinks that.
So yeah, origins of Overdrive explained. Yes he's an S_SKIN edit, deal with it.
Also, just a note, I do not approve of Tails and Knuckles overdrive. Kthxbai.