This season of Archer, called Archer: 1999, has our comatose hero dreaming about, and placing himself and his spy colleagues in imagined versions of, all manner of sci-fi movie tropes. This week’s, called “The Leftovers,” is about a mysterious alien creature discovered on board, who morphs into an increasingly dangerous – and, in this case, ravenous – deadly monster. And in Archer’s imagined scenario, guess who happen to be the titular leftovers?