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 Kanye West Facts Katy Perry Facts Adam Driver Facts Marlon Brando Facts Chester Bennington Facts Ed Sheeran Facts Jennifer Lopez Facts James Gandolfini Facts