Generator Rex
 

Not sure where Generator Rex fits into. It has transformation in that the main character, Rex, can create machines from his body that have multiple uses, you have many people who turn into giant monsters, though usually you only see the after math as Rex, able to cure them, reverts them to normal, and you have a hot goth chick who's mouth turns into a giant leech mouth...

... So yeah, treat Rex as you may. I think its a promising show to keep an eye out on for transformations.

Re: Generator Rex
 

It's by Man of Action, the same people behind the various Ben 10 shows, so it definately has a transformation "heritage." I like the show and Rex kinda reminds me of Travis Touchdown from No More Heroes. I just hope it doesn't become a staid Monster-of-the-Week type show.

Re: Generator Rex
 

I like the show as a cartoon, but don't think I could wank it too anything cartoon network shows. Though if you're tf crazy, Chaotic is probably right up your alley.