Making Character models, then exporting them the usable MLD0?

[steamdnt]

Is it possible to crate character models in a modeling program, such as Blender, and then export them to usable file type?
For example, I am toying with the idea of adding Claptrap from Borderlands, over pikachu, Is this at all possible?
If not, how to members in the Brawl vault get different characters, what do they do to change the whole shape, not just the skin?

[zigheart]

currently there is no converter for model files to mdl0 format so models made from scratch r not possible yet. what everyone else has done is moved the vertices around on existing models.