What should I use to express difference, platypus or alien?

I'm doing a collage of myself. In the center I want something that expresses my uniqueness, but what? You have no idea how different I am from everyone else, I know that everyone is unique, but I feel uncommon, extremely one of a kind. I need something that expresses that. What symbol would represent that? I am thinking an alien or a platypus, they are so different. I think I'm going with the platypus, what do you think?