Here's Mimi the mimic. Mechanically she's a Beast Barbarian Plasmoid. She's a mimic of mysterious origins and only remembers being in a forest. She basically gets isekai'd to Earth and is current traveling with a party of humans in Chicago. She is extremely bad at pretending to be a human, often reverting to her 6-eyed, sharp toothed face and trying to eat everyone she meets.

She can serve as a car for a little while which comes in handy for travel. She doesn't care much for human life and considers most other living things to be food, save for Toto, a toad she found and is taking care of. So far she's only threatened to eat her party members, but hasn't followed through. She pretty much always gnashes her teeth at whoever she meets and enjoys when people run in fear. Hopefully as time goes by and she spends time around humans, she'll grow to be more compassionate and have some semblance of empathy.