Tamatoa is the secondary antagonist of Disney's 2016 animated feature film Moana. He is a villainous giant crab that covets all things shiny and valuable. In an effort to exude beauty and superiority, Tamatoa displays his collected treasures atop his golden shell.
Obviously, don't nominate any human characters. Hybrids like Cheetah or The Lizard are okay, as are shapeshifters with one set animal form (eg Professor McGonagall.)