Father Brainstorm

Father Brainstorm is the father of Frank and Sheila Brainstorm and the husband of Mother Brainstorm. He is the only sane member of the Brainstorm family who usually acts like an old grandpa. He tries to have some father-son bonding with his son. Sometimes Frank will do some activities when he's not working on a project to overthrow Calvin or take over the world. He is portrayed by Charles Dance.