Sister Grim
Series The Grim Adventures of Billy & Mandy
Season 1
Production code 108
Writer Gord Zajac
Broadcast information
Cartoon Network US Premiere July 25, 2003
Paired with Son of Nergal
Go-Kart 3000
Chronological information
Son of Nergal
Go-Kart 3000
Sister Grim is the second segment of the eigth episode of The Grim Adventures of Billy & Mandy.


While Billy and Mandy were playing in a park. Billy was playing on a swing and Mandy pushes it so hard that Billy goes high in the air with his swing which was tied with a rope. Meanwhile Grim comes and stands where Mandy was and gets hit by the swing Billy was riding on, which throws him into air.

He lands somewhere in Europe (possibly either Germany or Switzerland), and ends up with a paint bucket, which leads to Grim looking like a nun. After being taken to a nunnery and being shown a book, it turns out that the younger nuns think that Grim's a nun called "Sister Big Momma." At first, Grim tries explaining that he's not a nun--in fact, he's the exact opposite of a nun--but decides to pretend to be Sister Big Momma, and ends strongly bonding with the younger nuns and having a lot of fun with them.

Meanwhile, Billy and Mandy come by the nunnery to take Grim home. After the kids finally reveal to the nuns that Grim himself isn't actually a nun, the nuns, understandably, get mad at Grim for lying to them. Grim apologizes to the nuns for lying to them, but assures them that he loved spending time with them and had a lot of fun with them. The nuns forgive Grim and launch him, Billy and Mandy back home to Endsville.


  • Story by: Gord Zajac
  • Storyboard by: Brett Varon
  • Directed by: John McIntyre, Juli Hasiguchi


  • When Grim falls on the bucket it was above his dress and in the next screenshot it is below
  • When Mandy throws water on the buket of paint it again come above and falls from the head of Grim


No Screenshot
The image gallery for Sister Grim may be viewed here.

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