Grampa

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

Grampa is the father of Susan 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.