Denis Mandel [Edit] By Sticky Facts Editorial StaffDenis Mandel biography, ethnicity, religion, interesting facts, favorites, family, updates, childhood facts, information and more:Denis Mandel date of birth:July 28, 1954How old is Denis Mandel?72What is Denis Mandel's occupation?ActorDenis Mandel claim to fame:Eugene on Happy Days Tags: actorbirth day 28birth month julybirth year 1954 Suggested Posts Rihanna Facts Jennifer Lopez Facts Arnold Schwarzenegger Facts Drake Facts Shaquille O'Neal Facts David Beckham Facts Bill Gates Facts Ed Sheeran Facts