I've done other 3D work. I did have something like a Metroid, but I can't open it up for some reason.
Anyway, here's my other work.

Second model I finished. Here, I practiced sculpting an open mouth. I don't like how the type of the tongue looks, but I'm still getting the hang of the controls.

Third model. I made this right after the sea serpent one. Just a random theropod head. The mouth seems to taper too much, though.

Most recent work. It's a model of Christie's head, combining both a somewhat realistic look and the Dino Squad style. Christie isn't my character; she belongs to Ryuukokoro.
I wasn't able to finish this model because, for some reason, when I added in a second object for the lower jaw (first time I did it this way) I wasn't able to sculpt it easily, and even painting it was difficult. So I just never completed it. Maybe I'll remake it later on.