Ah sorry, I just deleted my post because I wanted to add something... Here is the original post which you've just replied to (Vehek)...
So, to clarify, what are the big problems with implementing human Glenn in the game? (...apart from the current lack of Glenn sprites?)
I don't know much about sprite assembly, but if Glenn's climbing animation glitches, couldn't we just not use this animation, to bypass the problem? We'd have him use the same animation as the one for walking for instance. People would notice this little trick but it's not like it's game-breaking or anything. We could do this with other animations if they pose problems, and we'd have less frames to sprite as a result.
Concerning the actual spriting, Magus' spriteset could be used as a template for most frames, perhaps, since he looks kind of similar to Glenn. Modifying his spriteset (palette swap, head swap, and a few tweaks on the clothes) would be easier and faster to do than drawing everything from scratch.