Thonking (plus doctor character)

Sorry 4 posting cringe but I'm trying to think of their names. I've never been good at names lmfao... Heights too. Let me know if their height makes sense, and if there's a name you particularly like, or would like to suggest!

I also sketched another recurring character who is a doctor/mechanic. She's Neptune's go-to and helped him salvage Ei. I was thinking of Ei's background a bit, and I think I wanted them to be a robot that was originally used as a vessel for this rich guy who died, but the project was a failure and they were thus thrown away. Their memory was corrupted but they retained some sort of humanity from the program.

P.S. she definitely likes to experiment on Neptune :)

edit: added some colors for reference!