A person who masturbates far too often.
Maybe not often enough.
"Open up, Masturbatron, I need to shave!"
an incredibly shy transformer who isn't seen in any films because he is constantly masturbating. he doesn't like vaginas, only his hands. and he'll always check your oil
director: god damn it masturbatron, can't you stop jerking off for 5 minutes?
masturbatron: i can but i dont wanna