The Grim Adventures of Billy & Mandy The Most Greatest Love Story Ever Told Ever/Detention X (Season 7, Episode 7)
TV-Y7
TV Episode | 22 min | Animation, Adventure, Comedy

Primary photo for The Most Greatest Love Story Ever Told Ever/Detention X

The Grim Adventures of Billy & Mandy

The Most Greatest Love Story Ever Told Ever/Detention X (Season 7, Episode 7)

TV-Y7

TV Episode | 22 min | Animation, Adventure, Comedy

In "The Most Greatest Love Story Ever Told Ever" Nergal Jr. accidentally asks Mandy to the Valentine Day dance, making Irwin jealous. In "Detention X" Grim becomes a substitute teacher and sends all the kids into the Detention Dimension.

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Cast	+ Add Cast
12 cast members

Name	Known for
Grey Griffin Mandy / Boy #2 (voice) (as Grey DeLisle) Mandy / Boy #2 (voice) (as Grey DeLisle) See fewer	Batman: Arkham City (2011)
Greg Eagles Grim (voice) Grim (voice) See fewer	Metal Gear Solid (1998)
Richard Steven Horvitz Billy (voice) (as Richard Horvitz) Billy (voice) (as Richard Horvitz) See fewer	Invader ZIM: Enter the Florpus (2019)
Vanessa Marshall Irwin / Girl / Mandy's Mom (voice) Irwin / Girl / Mandy's Mom (voice) See fewer	Star Wars: The Bad Batch (2021)
Steve Blum Crazy Papoo / Leperchan Lad (voice) Crazy Papoo / Leperchan Lad (voice) See fewer	Star Wars: Rebels (2014)
Jane Carr Pud'n (voice) Pud'n (voice) See fewer	31 (2016)
Chris Cox Principal Goodvibes / Juice Man / Sick Man (voice) Principal Goodvibes / Juice Man / Sick Man (voice) See fewer	Ted (2012)
Debi Derryberry Nergal Jr. (voice) Nergal Jr. (voice) See fewer	Jimmy Neutron: Boy Genius (2001)
Jennifer Hale Date Girl #1 & #2 / Boy (voice) Date Girl #1 & #2 / Boy (voice) See fewer	Ratchet & Clank: Rift Apart (2021)
Martin Jarvis Nergal (voice) Nergal (voice) See fewer	Wreck-It Ralph (2012)
Renee Raudman Ms. Butterbean (voice) Ms. Butterbean (voice) See fewer	Metal Gear Solid: The Twin Snakes (2004)
April Winchell Mr. Slither / Kid (voice) Mr. Slither / Kid (voice) See fewer	Who Framed Roger Rabbit (1988)