Killer Croc as he appears in Batman: Arkham Asylum, and Batman: Arkham City.
This is based off of a giant troll figure. There was a tad bit of Sculpey to fill in the wholes in the head, and a little on the wrists. The collar was made out of Sculpey.
The spikes on his arms are made out of Lego horn pieces.
This was painted by me.