Arctic leviathan

Arctic Leviathans could be found dwelling in pits of freezing water, and would come out to attack the lombax. The Leviathans released moonstones upon dying. Ratchet must have retrieved several moonstones for the New Age Mystic on planet Grelbin, several of which wre found in the Leviathans.

Behind the scenes

 * The Y.E.T.I creatures in the Grelbin Tundra are very occasionally seen being picked off by Leviathan, it is possibly a weird form of easter egg.

Appearances

 * Ratchet & Clank: Going Commando