Ron Palillo made audiences laugh as goofy Arnold Horshack on the hit "Welcome Back, Kotter." He died of a heart attack Aug. 14 at age seven months after castmate Robert "Epstein" Hegyes died, also of an apparent heart attack.
Ron Palillo, Welcome Back Kotter Star, Dies at 63: Report
August 2012 (Ron Palillo) Horshack from "Welcome Back, Kotter," but to horror fans he'll always be Allen Hawes in Jason Lives: Friday the Part VI . Ron Palillo has passed away at age 63 from a heart attack.
Ron Palillo -- the actor who played Horshack on "Welcome Back, Kotter" -- died this morning at his home near Palm Beach, FL from an apparent heart attack . this according to someone close to the actor.