Ernie Klump Sr.

Ernie Klump Sr. (born April 22 1958) is the older brother of Sherman and the elder son of Cletus and Anna Pearl.

Unlike the other Klumps who are overweight, Ernie instead opted to gain muscle mass instead of pure fat, even advising Sherman to do the same so that he could eat without worrying about his weight problem. He is also very dim-witted compared to the other Klumps as he often asks dumb questions. For example when Sherman's Youth Formula causes Petey to become a giant hamster, Ernie was wondering if that was supposed to happen, much to the annoyance of Cletus who knows from experience that it wasn't. Ernie also has a jealousy streak on Sherman throughout the sequel and is very apathetic and rude as it shows how unhappy he was at Sherman's wedding during a dream sequence. It was also revealed that Ernie never went to college because he never took an aptitude test (which Cletus tells him to shut up on), indicating how dumb he really is. At the end of the sequel, at Sherman and Denise's wedding, as he was singing Larry Graham's classic hit "One in a Million You", he became overwhelmed that for the first time in his life, Ernie began crying for joy shouting "I love you, Joe College!".