Dr. Crygor

A Mad Scientist, Dr. Crygor busies himself with bizarre but mostly benign experiments on his private island base outside Diamond City. He's replaced most of his body with cybernetic prostheses for some reason and dresses like a superhero. Dr. Crygor is assisted in his lab by his energetic robot, Mike, and his cute granddaughter, Penny.

He's notable for going through two character design changes in-universe. Once, by being fused with an apple, and another by being powered up by his Kelorometer.