Not all bad guys start off bad. Most of them start good somewhere along the line. D-Troit was Professor B.M. Werken's friend and business partner up until a certain fateful day. But now he's 99% pure evil, and hell-bent on global domination, or getting his revenge on the Professor, one of the two. D-Troit is still 1% good though and the little bit of good he's got left inside him sometimes comes to the surface.
Update This is from a press release that was released today.