Conversation so far:
When was John Belushi on Saturday Night Live?
John Belushi was one of the seven original cast members of the NBC sketch comedy show Saturday Night Live in 1975.
How long was John Belushi on Saturday Night Live?
Over his four-year tenure at SNL, Belushi developed a series of successful characters.
What were John Belushi's well known characters on Saturday Night Live?
Belushi developed a series of successful characters, including the belligerent Samurai Futaba, Henry Kissinger, Ludwig van Beethoven and the Greek owner of the Olympia Café.
Why did John Belushi leave Saturday Night Live?
Belushi began experimenting heavily with drugs in order to deal with the constant pressure of comedy. His unpredictable temper caused him to be fired by Michaels a number of times.

Question: Who were his co workers on Saturday Night Live?
Self-contained rewrite: Who were John Belushi's co-workers on Saturday Night Live?