The Grim Adventures of Billy & Mandy Herbicidal Maniac/Chaos Theory (Season 6, Episode 6)
TV-Y7
TV Episode | 22 min | Animation, Adventure, Comedy

Primary photo for Herbicidal Maniac/Chaos Theory

The Grim Adventures of Billy & Mandy

Herbicidal Maniac/Chaos Theory (Season 6, Episode 6)

TV-Y7

TV Episode | 22 min | Animation, Adventure, Comedy

Herbicidal Maniac: General Skarr plans to take revenge on Billy for destroying his garden. Chaos Theory: Hoss Delgado asks Billy, Mandy and Grim to help him break up with Eris.

Directors

Juli Murphy (as Juli Hashiguchi) | Shaun Cashman (segments: Herbicidal Maniac) | Eddy Houchins (segments: Chaos Theory)

Writers

Maxwell Atoms (creator) | C.H. Greenblatt (story) (segments: Herbicidal Maniac) | James Silverman (segments: Chaos Theory) | Michael Diederich (segments: Chaos Theory) (as Mike Diederich)

Producer

Louis J. Cuck

Composer

Gregory Hinde

Casting Director

Kris Zimmerman

See all filmmakers & crew (17)

Edit Released

Updated Mar 21, 2006

Release date

Mar 21, 2006 (United States)

Awards

Series awards

Won 1 Primetime Emmy Award. Another 1 win & 6 nominations

Contacts

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Cast	+ Add Cast
12 cast members

Name	Known for
Grey Griffin Mandy (voice) (as Grey DeLisle) Mandy (voice) (as Grey DeLisle) See fewer	Batman: Arkham City (2011)
Greg Eagles Grim / Monster (voice) Grim / Monster (voice) See fewer	Metal Gear Solid (1998)
Richard Steven Horvitz Billy / Billy's Dad (voice) (as Richard Horvitz) Billy / Billy's Dad (voice) (as Richard Horvitz) See fewer	Invader ZIM: Enter the Florpus (2019)
Vanessa Marshall Irwin / Red Head Girl / Frog (voice) Irwin / Red Head Girl / Frog (voice) See fewer	Star Wars: The Bad Batch (2021)
Armin Shimerman General Skarr / Baby Spider (voice) General Skarr / Baby Spider (voice) See fewer	Star Trek: Deep Space Nine (1993)
Maxwell Atoms Jeff the Spider (voice) Jeff the Spider (voice) See fewer	The Grim Adventures of Billy & Mandy (2001)
Diedrich Bader Hoss Delgado (voice) Hoss Delgado (voice) See fewer	Office Space (1999)
Jane Carr Pud'n (voice) Pud'n (voice) See fewer	31 (2016)
Barry Dennen Salesperson (voice) Salesperson (voice) See fewer	Jesus Christ Superstar (1973)
John Kassir Donkey / Salesman / Manager (voice) Donkey / Salesman / Manager (voice) See fewer	Tales from the Crypt (1989)
Rachael MacFarlane Eris / Monster Bug (voice) Eris / Monster Bug (voice) See fewer	American Dad! (2005)
Dwight Schultz Earnest / Criag / Dog (voice) Earnest / Criag / Dog (voice) See fewer	Star Trek: First Contact (1996)