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The Worst Episodes of The Grim Adventures of Billy and Mandy

Every episode of The Grim Adventures of Billy and Mandy ranked from worst to best. Explore the Worst Episodes of The Grim Adventures of Billy and Mandy!

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The exploits of the Grim Reaper, who has been forced into being the best friend of two children. A spin-off of the show Grim & Evil.

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  1. #1 Worst Episode
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    The Grim Adventures of Billy and Mandy Season 1 Episode 2 - Skeletons in the Water Closet
    0.0/10(0 votes)

    #1 - Skeletons in the Water Closet

    S1:E2

    Billy's mother, Gladys, first notices Grim in Billy's bed, then in the shower and subsequently starts to get panic surges thinking that Billy is in danger. Meanwhile, Harold, Billy's dad, just thinks that Gladys is imagining things. In the end, Gladys ends up going living with Billy's aunt, Sis to try and calm herself down.

    Director:Dave Brain
    Writer:Greg Miller

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  2. The Grim Adventures of Billy and Mandy Season 1 Episode 3 - Opposite Day
    0.0/10(0 votes)

    #2 - Opposite Day

    S1:E3

    Billy and Mandy tell Grim it is "Opposite Day" and that, when they say something, they really mean the opposite. Due to his difficulty understanding the concept of Opposite Day, Grim has to do Mandy's chores. Finally, Grim thinks he understands when Billy and Mandy say they "want" pie, meaning they "do not want" pie. However, Mandy then says that when she said it was Opposite Day, it really was not.

    Director:Dave Brain
    Writer:Maxwell Atoms

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  3. The Grim Adventures of Billy and Mandy Season 1 Episode 4 - Look Alive!
    0.0/10(0 votes)

    #3 - Look Alive!

    S1:E4

    Grim is bored of being left alone while Billy and Mandy are not with him. Grim decides to fulfill his dream by working as a swimsuit model, but, as he is a corpse, he is not hired. Subsequently, Billy and Mandy give him a makeover to look more human. In the end, Grim gets the job in a TV ad, but he is only in the commercial for a few seconds and is portrayed as an ugly person.

    Director:Brian Hogan
    Writer:Maxwell Atoms

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  4. The Grim Adventures of Billy and Mandy Season 1 Episode 8 - Recipe for Disaster
    0.0/10(0 votes)

    #4 - Recipe for Disaster

    S1:E8

    Billy, Mandy, Grim and Pud'n are part of the "Person Scouts" (a Boy Scouts-esque organization) and need to sell cookies in order to win a badge. However, as Billy eats all of the cookies, Grim proposes to bake their own cookies using his aunt Kali's secret recipe. The cookies are a success and the troupe wins the contest. In the end, at the Person Scouts awards ceremony, aunt Kali reveals that the secret recipe contains insects, but everyone continues eating the cookies anyway.

    Director:Dave Brain
    Writer:Maxwell Atoms

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  5. The Grim Adventures of Billy and Mandy Season 1 Episode 14 - A Grim Surprise
    0.0/10(0 votes)

    #5 - A Grim Surprise

    S1:E14

    Billy tells Grim to help him throw a surprise birthday party for Mandy. Then, a reluctant Grim helps Billy prepare a cake while keeping it a secret from Mandy. In the end, a somewhat surprised Mandy reveals that her birthday isn't for the next five months, something that Billy already knew about.

    Directors:Robert Alvarez, John McIntyre
    Writer:Rob Desales

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  6. The Grim Adventures of Billy and Mandy Season 1 Episode 15 - Beasts and Barbarians
    0.0/10(0 votes)

    #6 - Beasts and Barbarians

    S1:E15

    Billy and Irwin have been playing their favorite video game, Beasts and Barbarians, for three days non-stop. In an attempt to stop their video game addiction, Grim transports them all to a real-life version of the game. Seeing as Billy and Irwin are still doing good in their quest, Grim increases the difficulty by manipulating the traps himself. In the end, Billy, Mandy, and Grim return home escaping from a giant cyclops, while Irwin remains trapped.

    Director:Dave Brain
    Writer:Gord Zajac

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  7. The Grim Adventures of Billy and Mandy Season 1 Episode 16 - Hoss Delgado: Spectral Exterminator
    0.0/10(0 votes)

    #7 - Hoss Delgado: Spectral Exterminator

    S1:E16

    Billy, Mandy, and Grim go to the museum on a school trip. There, they meet Hoss Delgado, self-appointed hunter of the paranormal, who upon spotting Grim, tries to eliminate him. Subsequently, Grim and Delgado engage in a fight. Finally, Delgado quits hunting Grim when he realizes Billy and Mandy control him. In the end, Delgado continues his own adventures and is seen fighting a werewolf.

    Director:Brian Hogan
    Writer:Gord Zajac

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  8. The Grim Adventures of Billy and Mandy Season 1 Episode 17 - To Eris Human
    0.0/10(0 votes)

    #8 - To Eris Human

    S1:E17

    While going to the shopping mall with Billy and Mandy, Grim spots the beautiful Eris, the goddess of discord and chaos, and tries to ask her out. However, Eris is not interested in the skinless Grim, but in the muscular Adonis. Then, Eris invites Mandy to join her in creating chaos using the Apple of Discord. Although initially they get along, Eris pulls a prank on Mandy, who subsequently tries to get revenge. In the end, Mandy fools Eris into thinking that Adonis is in the movie theater, and Eris accidentally kisses Grim.

    Director:Dave Brain
    Writer:Gord Zajac

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  9. The Grim Adventures of Billy and Mandy Season 1 Episode 20 - Big Trouble in Billy's Basement
    0.0/10(0 votes)

    #9 - Big Trouble in Billy's Basement

    S1:E20

    After taking the Underworld's "Bad Book" from Grim, Billy becomes possessed by an evil entity. Then, Billy steals Grim's scythe, and uses it to open a portal to summon Yog-Sothoth. In consequence, Mandy calls for Hoss Delgado to battle Billy. It is revealed that the portal can only be sealed by throwing the book into it. As Billy eats the book, Mandy throws Billy himself into the portal, restoring everything to normal. Instants later, a portal opens up and Billy comes out and says they didn't want him there.

    Directors:Robert Alvarez, John McIntyre
    Writer:Gord Zajac

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  10. The Grim Adventures of Billy and Mandy Season 1 Episode 21 - Tickle Me Mandy
    0.0/10(0 votes)

    #10 - Tickle Me Mandy

    S1:E21

    Mandy and her parents leave the city for a day, which makes Billy feel lonely. Then, Grim uses his supernatural powers to create a fake Mandy with pieces of dolls and toys for Billy to play with. However, the "new" Mandy is too aggressive with Billy, and he starts fearing her. The next day, the real Mandy returns home, and promptly destroys the new Mandy while in the see-saw.

    Director:Brian Hogan
    Writer:Gord Zajac

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  11. The Grim Adventures of Billy and Mandy Season 1 Episode 22 - Little Rock of Horrors
    0.0/10(0 votes)

    #11 - Little Rock of Horrors

    S1:E22

    In this musical episode, which pays homage to Little Shop of Horrors, Billy befriends a singing brain-eating meteor (voiced by Voltaire) that falls from the sky. With Billy's help, the creature grows bigger and eventually eats the brains of all people in Endsville (turning them into zombies with glowing green eyes). The last brain he eats is Mandy's, which results in the creature transforming into a brain-eating Mandy. The song featured is BRAINS!, composed by goth artist Voltaire specifically for this episode.

    Director:Robert Alvarez
    Writer:Gord Zajac

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  12. The Grim Adventures of Billy and Mandy Season 1 Episode 23 - Dream a Little Dream
    0.0/10(0 votes)

    #12 - Dream a Little Dream

    S1:E23

    Billy, Mandy, and Grim eat moldy pizza leftovers, and after falling asleep, they have nightmares. Billy dreams of cute bunnies which turn into monsters; Grim dreams of an endless number of bossy Mandys; Mandy dreams of being pulled into a volcano and then commanding demons at the rhythm of music, in a scene that reminisces the Night on Bald Mountain segment of Fantasia. In the end, Mandy reveals that her dream was actually very pleasant, and she eats the last slice of the rotten pizza.

    Director:Dave Brain
    Writer:Gord Zajac

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  13. The Grim Adventures of Billy and Mandy Season 2 Episode 14 - Love Is Evol Spelled Backwards
    0.0/10(0 votes)

    #13 - Love Is Evol Spelled Backwards

    S2:E14

    Nergal attempts to woo Billy's aunt.

    Director:Juli Murphy
    Writer:Craig Lewis

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  14. The Grim Adventures of Billy and Mandy Season 2 Episode 16 - Smarten Up!
    0.0/10(0 votes)

    #14 - Smarten Up!

    S2:E16

    Grim tries to help Billy pass a test.

    Directors:Robert Alvarez, John McIntyre
    Writer:Gord Zajac

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  15. The Grim Adventures of Billy and Mandy Season 2 Episode 17 - The Grim Show
    0.0/10(0 votes)

    #15 - The Grim Show

    S2:E17

    Grim tries to stop a show from being canceled.

    Directors:Robert Alvarez, John McIntyre
    Writer:Craig Lewis

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  16. The Grim Adventures of Billy and Mandy Season 2 Episode 19 - Sister Grim
    0.0/10(0 votes)

    #16 - Sister Grim

    S2:E19

    Grim thinks he is a nun.

    Directors:Juli Murphy, John McIntyre
    Writer:Gord Zajac

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  17. The Grim Adventures of Billy and Mandy Season 2 Episode 20 - Go Kart 3000!
    0.0/10(0 votes)

    #17 - Go Kart 3000!

    S2:E20

    Grim and the children enter a kart competition.

    Directors:Randy Myers, John McIntyre
    Writer:Gord Zajac

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  18. The Grim Adventures of Billy and Mandy Season 2 Episode 21 - Terror of the Black Knight
    0.0/10(0 votes)

    #18 - Terror of the Black Knight

    S2:E21

    Billy tries to show off at the Renaissance festival.

    Director:Juli Murphy
    Writer:Craig Lewis

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  19. The Grim Adventures of Billy and Mandy Season 2 Episode 22 - Battle of the Bands
    0.0/10(0 votes)

    #19 - Battle of the Bands

    S2:E22

    Grim sings in a band.

    Director:Robert Alvarez
    Writer:Craig Lewis

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  20. The Grim Adventures of Billy and Mandy Season 2 Episode 23 - The Halls of Time
    0.0/10(0 votes)

    #20 - The Halls of Time

    S2:E23

    Billy and Mandy visit the Halls of Time.

    Directors:Randy Myers, John McIntyre
    Writer:Gord Zajac

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  21. The Grim Adventures of Billy and Mandy Season 2 Episode 25 - Chicken Ball Z
    0.0/10(0 votes)

    #21 - Chicken Ball Z

    S2:E25

    Mandy eats a magical ball of chicken.

    Director:Juli Murphy
    Writer:Ben Spergel

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  22. The Grim Adventures of Billy and Mandy Season 3 Episode 14 - Bully Boogie
    0.0/10(0 votes)

    #22 - Bully Boogie

    S3:E14

    After failing to scare a fifteen-year-old, the Boogeyman decides to visit his old middle-school victim, Grim. Grim remembers how Boogie used to be a bully, and demands an apology from him. Boogie disappears to the Underworld, taking Billy with him. Mandy and Grim follow Boogie, and to settle their differences Mandy suggests having a scaring contest, in which whoever can scare a kid the most wins. Boogie's transformation as a werewolf is not enough to scare the kid, but Grim's transformation into a giant, horrific rubber duck is.

    Director:Juli Murphy
    Writers:Zena Leigh Logan, James Silverman, Spencer Laudiero

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  23. The Grim Adventures of Billy and Mandy Season 3 Episode 15 - Here Thar Be Dwarves!
    0.0/10(0 votes)

    #23 - Here Thar Be Dwarves!

    S3:E15

    As Billy walks into the woods to have a picnic, Yogi and a giant, feral version of Boo-Boo (from The Yogi Bear Show) come to steal his basket, and he escapes by hiding in a cave. Billy is taken to the mushroom lair of the dwarfs where King Beardbottom tells him the story on how the different races split the food-services industry, after the conference of Rivendell. The king sends Billy to infiltrate the elves' cookie factory to deactivate their force field, so the dwarves can assault the factory. After a fierce battle (censored out "for younger viewers", by a single clip of a pink koala continuously licking a eucalyptus leaf) and Billy's words, the elves and dwarves decide to work together and split the profits.

    Director:Robert Alvarez
    Writers:Gord Zajac, C.H. Greenblatt

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  24. The Grim Adventures of Billy and Mandy Season 3 Episode 16 - Which Came First?
    0.0/10(0 votes)

    #24 - Which Came First?

    S3:E16

    While going to a science museum, Billy and Mandy's school bus breaks down in the middle of the desert. After digging for fossils, Billy, Mandy and Grim wander around and find an abandoned mine, where Billy is captured by a giant, mutant chicken. When Mandy and Grim go to rescue him, they find an underground laboratory from the days of the Cold War where mutant chickens were created. The mountain makes eruption, the chickens are roasted by lava, and the whole class obtains food so they do not have to resort to cannibalism.

    Director:Brian Sheesley
    Writers:Matt Sullivan, Vincent Waller

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  25. The Grim Adventures of Billy and Mandy Season 3 Episode 17 - Substitute Teacher
    0.0/10(0 votes)

    #25 - Substitute Teacher

    S3:E17

    Billy's first cousin from the center of the Earth, Nergal Jr. goes to school for the first time, but he is worried that people may not like him. Soon enough, Junior becomes bullied by Sperg, with Miss Butterbean's allowance. Billy suggests Junior to use his shapeshifting abilities to take on the form of Miss Butterbean, so Junior can help him pass a math test. Junior likes the idea, but he morphs into Miss Butterbean to get revenge on Sperg instead. Sperg is seen living in the center of the Earth as Junior's pet.

    Director:Shaun Cashman
    Writers:Maxwell Atoms, Chris Reccardi

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Worst Episodes Summary

"Skeletons in the Water Closet" is the worst rated episode of "The Grim Adventures of Billy and Mandy". It scored /10 based on 0 votes. Directed by Dave Brain and written by Greg Miller, it aired on 8/24/2001. This episode scored 0.0 points lower than the second lowest rated, "Opposite Day".