A recent TeamXbox preview of Facebreaker included profiles of many of the characters that will be included in the game. There are still some that they weren’t shown to them, however they are able to vaguely describe several that haven’t been seen in any of the screenshots or videos yet.
Personally I’m looking forward to the monkey, though I think overall I’m more interested in the potential of Photo Face than these characters. In total they were able to talk about 11 of them. You can read the full preview here.