Oil Man is a maintenance robot made by Dr. Light to be able to produce a special type of oil from the dispenser on his left arm that can work with any machinery. He enjoys oil and believes it's the answer to everything. He has an urban style of speaking. Unlike his polar opposite Time Man, Oil Man has a very carefree and reckless attitude similar to that of stereotypical punk teenager (for example, calling Guts Man an "old man"), and does not seem to take many things seriously even in battle. He enjoys skateboarding and giving his comrades fill-ups.