This -- obviously -- isn't much of a fix, but more of a suggestion.  Add Devan Shell to the Multiplayer Characters roster in Jazz Jackrabbit 2 v1.2x.  He has all the necessary animations, aside from grappling and injury sprites, but I wouldn't think those would be too hard to add.  If so, then just make him unable to grapple, and jerry-rig something with his existing sprites, for his injury sprites.