Ken Osmond, who played troublemaker Eddie Haskell on TV’s Leave It to Beaver has passed away at age 76. His son, Eric, said in a statement, “He was an incredibly kind and wonderful father. He had his family gathered around him when he passed. He was loved and will be very missed.” The Haskell character was a troublemaking friend of Wally Cleaver, Beaver’s older brother. The actor revisited his most famous role frequently over the years in the many subsequent iterations of the show, most notably Still the Beaver, which ran from 1983-1989. Osmond also guested on Happy Days, Lassie, Petticoat Junction and The Munsters.

The actor went on to become an LAPD Cop, growing a mustache to be less-recognizable on the job.