Yeah, I am curious as well. And I wouldn't be surprised too much that KC has prepared something for each character; but at the moment the focus is pretty tight.
Riley => becomes a Rodriguez-bitch like in Machete and is prepared to literally vaporize Scratch
Hope => becomes a River-clone like in Firefly and will eat zombies alive, yeah, that's right; at first she cures 'em zombies in order to destroy them afterwards.
Pegs => realizes: Love and peace are nice, but guns are even more, and then she dwarves any actress from the Resident Evil movie-series.
Kelly => as a former lawyer she is just one step away from becoming judgess DreadASS, and she will return THE LAW back to LA ...
And Datu the ressourcefull? Well: Since he is the ressourcefull, he transforms into Optimus Prime and starts to kickass like crazy ...
All the best!