Why not settle this one with a poll?
Here we have some good names all of them showing a lot, but maybe not all, of the requirements to bring Greebo to life.

I have what Terry describes as "Real Cats" in his book the Unadulterated Cat, and although they are a bit podgy they seem to be in great demand with the local lady cats even though they've been neutered.
Betcha never thought about that aspect? :o