Dan Duryea - sometimes off the screen is different

Dan Duryea made a career of playing bad guys, frequently those almost or fully insane. However, according to Wikipedia, off the screen he was an entirely different person:

"Duryea was quite different from the unsavoury characters he often portrayed. He was married for 35 years to his wife, Helen, until her death in January 1967. The couple had two sons: Peter (who worked for a time as an actor), and Richard, a talent agent. At home, Duryea lived a quiet life at his house in the San Fernando Valley, devoting himself to gardening, boating and community activities that included, at various times, active membership in the local parent-teacher association and command of a Boy Scout troop."