He was a big druggie for a long time.He and Robert De Niro were the last people to see John Belushi alive.They were both looking for drugs.
John Belushi’s Death: Penny Marshall Sounds Off 30 Years Later
https://www.hollywoodreporter.com/news/john-belushi-death-anniversary-penny-marshall-296818
Hey Pam it’s not funny.
Mar 21, 2018 - Robin Williams’s Mork & Mindy co-star has said he repeatedly grabbed her breasts and bottom and exposed himself to her on the set, a new book reveals, but she excused it as part of Williams’s playful personality. ... Williams would also wrestle her, break wind on her and come on to the set totally naked.
http://newsok.com/article/5587899