Keegan-Michael Key (born March 22, 1971) is an American comedian best known for his roles on the sketch shows "MAD TV" and "Key and Peele". He also had a recurring role on "Reno 911!". He has appeared several times on the 2013 US reboot of Whose Line is it Anyway? since the 9th season on the CW run.
The episodes Keegan appeared in during season 12 were originally produced for season 11. He did not appear in any original episodes produced for season 12.