Gary Michael Cole is an American actor. He began his professional acting career on stage at Chicago's Steppenwolf Theatre Company in 1985. His breakout role was playing Jack 'Nighthawk' Killian in the NBC series Midnight Caller (1988–1991).

Steppenwolf Theatre Company is a Chicago theater company founded in 1974 by Terry Kinney, Jeff Perry, and Gary Sinise in the Immaculate Conception grade school in Highland Park, Illinois and is now located in Chicago's Lincoln Park neighborhood on Halsted Street. The theatre's name comes from Hermann Hesse's novel Steppenwolf, which original member Rick Argosh was reading during the company's inaugural production of Paul Zindel's play, And Miss Reardon Drinks a Little, in 1974. After occupying several theatres in Chicago, in 1991, it moved into its own purpose-built complex with three performing spaces, the largest seating 550.