I haven't seen either character from CBFD, as the game is pretty trick to rip models from (tried 3DX Ripper before with little to no success), not sure about the Xbox version, might be feasible, not sure. I would think it probably uses the xnalara format.
I've seen a
topic on the forums here, but the author was having problems with textures.
I've also seen a
Garry's Mod model that someone ripped.
As for the XBox version, the game uses compressed files with a .RBM extension. And since it's using an unknown compression, it's sounds like it's near impossible for them to be extracted.
Topic on XeNTaX forumsThere's not a working XBox emulator that can play the game either unfortunately.