I can move a vein in my left hand whenever I move my fingers in a specific way I love it cuz I can freak people out and they'll sometimes tell me I have a worm inside my hand or smth lmao
How about a tailclops It's a race of humanoids that as the name implies, have one eye and a tail Here's a reference if you're interested
If you make the skin (based off the image), then know that her name is Ata and she's actually from an artist in twitter called Anaid Anaid is one of those "special artists" so discretion is advised