Sonic Chronicles - Dr. Madden

Sonic Chronicles: The Dark Brotherhood introduced several new characters to the Sonic series. My favorite of these new characters is this guy.

Dr. Madden is a meekly, well-meaning yet injury-prone biologist who you can assist in one of the game's many side quests. As a fan of mustachioed bespectacled scientists, I say he's a welcome addition to the series, even if he likely won't appear outside the Sonic Chronicles series.

We only ever see his face up close, but his map sprite's outfit essentially looked like this, hence the design.

I was a bit disappointed that he and Eggman never interacted.