Grampa

Not to be confused with Greg's Grandpa, Greg’s paternal grandfather.

Grampa is the father of Susan and her sisters and the husband of Gramma. He was shown in the extended Do-It-Yourself Book, in Greg’s family tree.

Appearance
In Greg’s family tree, Grampa is half-bald with a few strands of hair on his head. He wears glasses and is shown wearing a suit and a black tie.