1. Toadblatt's School of Sorcery/Educating Grim/It's Hokey Mon!

Grim gets Billy and Mandy into Toadblatt's Summer School of Sorcery. Then, Mandy's arch-nemesis, Mindy, befriends Grim.

2. Night of the Living Grim/Brown Evil

An illness makes Grim so sick he actually becomes alive. Then, zombies crave the brownies Billy makes.

3. Mandy the Merciless/Creating Chaos/The Really Odd Couple

In a future time, Mandy rules the world. But not everyone is happy about it. Then, Eris returns and she's enlisting Billy's help to spread chaos.

4. Who Killed Who?/Tween Wolf

Mandy visits the old haunted house down the street. No one has emerged from that house in years. Will Mandy's fate be different?

5. Grim in Love/Crushed/Love is Evol Spelled Backwards

Grim falls in love with a Goth girl. But what will happen when she discovers Grim is not just a thin, pasty guy in black?

6. The Crawling Niceness/Smarten Up!/The Grim Show

Billy hatches a talking spider from an egg in Grim's trunk. Then, to help Billy pass a test, Grim gives Billy a bookworm to smarten him up.

9. Billy and the Bully/To Eris Human/Big Trouble in Billy's Basement

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

10. Battle of the Bands/Little Rock of Horror/Dream a Little Dream

Grim becomes the lead singer of a goth metal band. Then, Billy befriends a giant brain-eating meteor in his backyard.

11. Meet the Reaper/Skeletons in the Water Closet/Opposite Day

Billy and Mandy play a game with the Grim Reaper for the soul of a hamster. Then, Billy's mom discovers Grim sleeping in her son's room.

12. Get Out of My Head/Look Alive/Mortal Dilemma

Grim teaches Billy how to take control of someone else's body. Then, the Grim Reaper confesses to a desire to be a swimsuit model.

13. Fiend Is Like Friend Without the "R"/Recipe for Disaster/A Dumb Wish

When Billy and Mandy are kidnapped, Grim must decide to rescue them or relax. Finally, Billy and Mandy discover Grim's mom is a genie.

14. Grim or Gregory?/Grim vs. Mom/Tastes Like Chicken

While on a Halloween excursion, Grim finds himself mistaken for a young boy named Gregory. It's up to Billy and Mandy to return Gregory to his mom.