In two measly lines, the planned alien invasion that had been literally promised at the end of the series’ initial run and supposedly predicted by the Mayans, was tossed out the metaphorical window.

Debuting in Resident Alien season 4, episode 1, "Prisoners," Monsoon voices Bruce, the Grey Alien who liberates Alan Tudyk's Harry Vanderspeigle from his incarceration aboard the Greys' moon ship.

What the Greys did to Harry between Resident Alien seasons 3 and 4 has now been revealed, and it sets up a story that brings the arc of Alan Tudyk's character in a satisfying loop.

Enjoying whatever time he has left on earth in Sin City (a.k.a. Las Vegas), Bruce tells Harry that the Greys didn't put an inhibitor in him but instead removed all his alien DNA.