She started out as just a visual representation of my forum handle and sort of grew a mythos after the fact. Now she's kind of like the spawn of Lovecraftian Deep Ones but hails from a northwoods lake. She's good friends with a bunch of American indian spirit animals & serves as one of Ray's many advisors re: cryptids in Fearsome Critters, which is currently still not really a thing.
Also, the word you meant to use was humanoid. Anthropomorphism is giving human attributes to non-human things. Squidbunny (the character) isn't really based on an animal or object, she's a monster or mutant or something like that. There's a difference.