‘Rick and Morty’ Creator on Dan Harmon as Rick’s ‘Nemesis,’ Morty’s ‘Narnia Thing’ and ‘F-ing Insane’ Next Episode

(Warning: This post contains spoilers for the Season 5 Premiere of “Rick and Morty,” titled “Mort Dinner Rick Andre.”)

The last thing “Rick and Morty” fans probably expected to learn during the Season 5 premiere is the identity of Rick Sanchez’s “once and eternal foe” because, let’s face it, we’ve met about 100 different people who hate Rick more than anything. But the fifth-season opener, titled “Mort Dinner Rick Andre,” of the Justin Roiland- and Dan Harmon-created Adult Swim series introduced us to the man, the myth, the legend who claims to be Rick’s one true nemesis: Mr. Nimbus (voiced by Harmon), the king of the ocean, whose most intimidating powers are he can “make the land wet” and “controls the police.”