A regular bit on Comedy Central's Key & Peele show (which ran 2012-2015) featured Jordan Peele as the unfailingly level-headed President Obama and Keegan-Michael Key as Luther, whose job was to translate Obama's calm remarks into something reflecting the anger, outrage, and frustration one might have expected Obama to feel internally. This became so popular that Key appeared with the real President Obama during a White House Correspondents' Dinner in 2015.
Some of us have been missing Luther, so it's good news that he's apparently back. In mid-July Key appeared on an episode of The Late Show with Stephen Colbert to talk about his latest role as Horatio in a production of Hamlet. (Key studied as a Shakespearean actor before getting into comedy.) But Colbert invited Key to revive the character of Luther, and he did, quite gloriously.
As a bonus, here's Luther at the 2015 White House Correspondents' Dinner: