Season 1

Billy and Mandy, two neighbor kids, play a game with the Grim Reaper for the soul of a sick hamster.

Billy's overprotective mom discovers the Grim Reaper sleeping in her son's room.

Grim's patience and sanity are put to the test as he is forced to deal with an unconventional holiday where everything means the reverse of what it normally does.

The Grim Reaper confesses to a secret desire to be a swimsuit model. Can Billy and Mandy put a little bit of life into the old guy and make his dream come true?

Grim misses his job and goes out on the town hoping to recapture some of the glory of his past. After rescuing a doomed skateboarder, Grim begins to question his purpose in the universe.

Grim teaches Billy how to take control of someone else's body. Billy, unfortunately, makes the mistake of trying his new skill out on Mandy.

Billy and Mandy are kidnapped by another supernatural creature. Grim must decide if he'd rather rescue his "friends" or just relax in a lawn chair.

After Billy eats all of the Person Scout cookies the kids are supposed to be selling, Grim saves the day with his Great Aunt's secret recipe. The whole town discovers that some recipes should be kept secret.

Billy and Mandy discover that Grim's mom is a genie. Mandy is soon in control of the only remaining wish, with Grim and Billy desperately trying to curry favor.

Billy’s Mom returns, bent on taking vengeance on Grim!

After some shoddy detective work, Billy and Grim deduce that Mandy is a cannibal and has eaten everyone in the neighborhood! Billy decides to confront Mandy before she eats him!

While on a Halloween excursion, Grim finds himself mistaken for a young boy named Gregory. Now it’s up to Billy and Mandy to return Gregory to his mom and retrieve their wayward Grim.

Nergal returns, trying to win friends with a giant carnival. Billy takes up his cause, revealing to Nergal the five C’s of friendship.

Billy and Grim plan a surprise birthday party for Mandy, only to succumb to a surprise of their own.

Billy and Irwin are addicted to the video game “Beasts & Barbarians.” Mandy and Grim work to cure Billy and Irwin of their addiction by venturing to another dimension to give Billy and Irwin a taste of “the real thing.”

Grim must evade extermination at the hands of Hoss Delgado, Spectral Exterminator!

Eris, the Goddess of Chaos, arrives at the Endsville mall. She takes Mandy under her wing while Grim pines over his unrequited love for Eris.

Billy eats too much junk food and gets a small growth on his back. It grows and grows until it becomes an evil pint-sized Billy! Can Mandy and Grim get rid of the evil growth before it terrorizes the neighborhood?!

Billy runs afoul of Sperg, the school bully. With the help of Mandy and Grim, will Billy get Sperg to leave him alone?

Billy steals Grim’s “bad book” and accidentally brings about the beginning of an apocalypse. Hoss Delgado returns to lend a hand as Grim and Mandy try to stop Billy from bringing existence to an end!

Mandy goes away for the weekend. Billy is a wreck without Mandy. So Grim makes Billy a new Mandy out of old toys. But this new Mandy is not all she’s cracked up to be.

Billy befriends a giant brain eating meteor in his backyard.

Grim, Billy and Mandy eat some bad pizza, resulting in a series of bizarre and mind bending dreams.