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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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Episode Rankings

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

    S1:E3

    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.

    Director:Dave Brain
    Writer:Maxwell Atoms

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

    S1:E4

    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?

    Director:Brian Hogan
    Writer:Maxwell Atoms

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

    S1:E14

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

    Directors:John McIntyre, Robert Alvarez
    Writer:Rob Desales

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

    S1:E15

    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.”

    Director:Dave Brain
    Writer:Gord Zajac

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

    S1:E16

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

    Director:Brian Hogan
    Writer:Gord Zajac

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

    S1:E17

    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.

    Director:Dave Brain
    Writer:Gord Zajac

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

    S1:E20

    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!

    Directors:John McIntyre, Robert Alvarez
    Writer:Gord Zajac

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

    S1:E21

    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.

    Director:Brian Hogan
    Writer:Gord Zajac

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

    S1:E22

    Billy befriends a giant brain eating meteor in his backyard.

    Director:Robert Alvarez
    Writer:Gord Zajac

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

    S1:E23

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

    Director:Dave Brain
    Writer:Gord Zajac

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

    S2:E14

    Nergal attempts to woo Billy’s aunt. Can Billy stop Nergal from sweeping his aunt off her feet?

    Director:Juli Murphy
    Writer:Craig Lewis

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

    S2:E16

    To help Billy pass a test, Grim gives Billy a bookworm to eat to smarten up. Unfortunately, the cat gets to the bookworm first.

    Directors:John McIntyre, Robert Alvarez
    Writer:Gord Zajac

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

    S2:E17

    While trying to stop his favorite show from being cancelled, Grim inadvertently becomes its new host…

    Directors:John McIntyre, Robert Alvarez
    Writer:Craig Lewis

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

    S2:E19

    Grim is mistaken for “Sister Big Mama,” and gets adopted by a convent of loving, bell-ringing nuns. It’s up to Billy and Mandy to set them straight.

    Directors:Juli Murphy, John McIntyre
    Writer:Gord Zajac

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

    S2:E20

    Grim and the kids enter the annual Endsville GoCart Competition!

    Directors:Randy Myers, John McIntyre
    Writer:Gord Zajac

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

    S2:E21

    Billy tries to show off at the Rennaissance Festival in a suit of cursed knight’s armor conjured by Grim!

    Director:Juli Murphy
    Writer:Craig Lewis

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

    S2:E22

    Grim becomes the lead singer of a goth metal band, “Purple Filth.” Billy is jealous, and recruits his dad to teach him how to compete in the “Battle of the Bands” competition.

    Director:Robert Alvarez
    Writer:Craig Lewis

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

    S2:E23

    Grim takes Billy and Mandy on a field trip to the Halls of Time, where the past, present, and future are monitored.

    Directors:Randy Myers, John McIntyre
    Writer:Gord Zajac

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

    S2:E25

    With the help of a mysterious chicken ball, Mandy enters the local karate championship and takes on all comers. Now, she’s out of control, and it’s up to Billy to stop her!

    Director:Juli Murphy
    Writer:Ben Spergel

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

    S3:E14

    Grim’s old nemesis, the Boogie Man, attempts to take over Grim’s job, reigniting an old rivalry that culminates in a showdown for supremacy.

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

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

    S3:E15

    Billy goes on a picnic and ends up resolving an old dispute between the Dwarves and the Elves over control of the cookie and mushroom businesses.

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

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

    S3:E16

    A school field trip leads to the discovery of a failed Cold War government experiment with superchickens. Grim and Mandy must rescue Billy from becoming chicken feed.

    Director:Brian Sheesley
    Writers:Vincent Waller, Matt Sullivan

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

    S3:E17

    Nergal Jr. starts school with Billy and Mandy and falls prey to Sperg’s bullying. When the teacher won’t protect him, Nergal Jr. steps up and teaches Sperg a lesson in respect.

    Director:Shaun Cashman
    Writers:Maxwell Atoms, Chris Reccardi

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  24. The Grim Adventures of Billy and Mandy Season 3 Episode 18 - Super Zero
    0.0/10(0 votes)

    S3:E18

    Billy becomes a super hero in a galaxy far far away while Grim and Billy’s Dad build a shed and a bridge to each other’s hearts.

    Directors:Juli Murphy, Phil Cummings
    Writer:Brett Varon

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  25. The Grim Adventures of Billy and Mandy Season 3 Episode 19 - Sickly Sweet
    0.0/10(0 votes)

    S3:E19

    Billy and Grim use the Mask of the Beast to teach Mandy how to be sweet and loving, with disastrous consequences.

    Directors:Robert Alvarez, Phil Cummings
    Writer:Maxwell Atoms

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Worst Episodes Summary

"Opposite Day" 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 Maxwell Atoms, it aired on 8/31/2001. This episode scored 0.0 points lower than the second lowest rated, "Look Alive!".