Sophia is the mechanic, and she was added in comic 403. She said she designed the Dungeon.She has a bright, excitable personality and loves bunnies. She and the Tinkerer are "outcast buddies".
in comic 458 Jesse said "I’ve decided it’s canon that Sophia’s eyes are slightly crossed. She wasn’t cute enough already, you know?"
Sophia carries around a giant Wrench."[the wrench] Its like a part of me dude. You can't separate us." - Sophia the Mechanic-