Grandpa Clyde is Phineas' maternal grandfather on Disney's Phineas and Ferb . He likes to have fun with his grandchildren and his wife Betty Joe. He enjoys camping, storytelling, and gets confused rather frequently. He is a true adventurer and hasn't let his age slow him down. He is very likely a source of the duo's creativity. Even though he's more of a lover than a fighter these days, it seems he's stills got a bit of a punch left.