Enigma

Enigma is a shapeshifter who can take practically any living form (within reason). The canine form prevalent in her 'main' design is simply the one she uses most often when dealing with other canids, and she can look like practically anyone or anything if she so desires. Also, while I refer to her with she/her/hers pronouns here, she doesn't identify with any particular gender and changes her biological sex often. She just often defaults to a feminine body because she tends to find women more powerful and likable than men.