Episode list

Young Bobby Roberts, a human in the Overworld, might be the first King of Demons in the Underworld. It is up to the newly appointed Nightmares--Gremlin, Stewie, Stitches and Mask--to keep an eye on him until they know for sure.

The Nightmares find themselves in the spotlight.

The tables turn when the Nightmares try to scare Bobby but end up scaring themselves.

Gremlin discovers that too much of a good thing is bittersweet.

Things get shifty when Gremlin's brother takes over.

Stewie's double life is exposed.

Mask is under the weather and now Gremlin is underage.

Slim Shifty takes in a new dog that bears a striking resemblance to a certain Gremlin.

Bobby bakes a cake.

The Nightmares decide it's time to get spooky.

Stewie does whatever he wants whenever he wants and nothing bad happens.

Sun's out, Stum's out. What's Gremlin and Slim's secret?

In an epic season finale, the King of Demons is revealed to the Underworld.