Professor Sherman Klump / Buddy Love / Lance Perkins / Cletus 'Papa' Klump / Anna Pearl 'Mama' Jensen Klump / Ida Mae 'Granny' Jensen / Ernie Klump, Sr.
Professor Sherman Klump / Buddy Love / Lance Perkins / Cletus 'Papa' Klump / Anna Pearl 'Mama' Jensen Klump / Ida Mae 'Granny' Jensen / Ernie Klump, Sr. / Young Cletus 'Papa' Klump