Do you think there are more purple dragons
 

You know like the ones we saw we like the chinatown branch

I would hope so!...because four or five people doesnt make the impression of a gang but of a joke...as much as I enjoy seeing them in the show;)

I'm sure there are more PDs or that more are being recruited. They just choose to show only three for now, but I hope that in time they show more.

I am sure there are most elsewhere. They will probably make an appearance later. The 2k3 show had a lot of them :P

They've only shown us what, 3 or 4? I'm sure there's plenty more than that, it just seems like animating many character models at a time is a pain to the guys doing this show or something. It's probably a lot more work than it seems, don't get me wrong. I'd be interested in some storylines that feature them, though.

Not that it's canon to the show, but there were a couple extra members in the first issue of TMNT: New Animated Adventures.

I wouldn't mind seeing Angel show up. We've seen her as a kid, a few years younger than the TMNT, and in IDW as an adult, around the same age as Casey. It would be cool to see her show up again as a kid the same age as the TMNT, or as a sixteen or seventeen year old, a few years their senior.

There would be more dragons, but the animators don't feel like making more models. It's a lot easier to animate lots of different people in a 2D cartoon than in a CGI one.

Hun, Angel and Bebop/Rocksteady would be good for more Purple Dragon members.

Hun/Angel are in 4kids and IDW, and Bebop/Rocksteady's gang in the original toon was pretty much based on the Purple Dragons anyway.