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Season guide

The Grim Adventures of Billy and Mandy: Season 6

24 episodes Premiered Jan 6, 2006 Updated Sep 27, 2026
Previously on The Grim Adventures of Billy and Mandy

Season 6 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Picks up essential narrative continuity directly following the events of The Grim Adventures of Billy and Mandy Season 5.
  • ⚡ Character alliances, factions, and personal loyalties undergo significant shifts under escalating stakes.
  • ⚡ Addresses unresolved cliffhangers and thematic mysteries introduced during previous seasons.
  • ⚡ Establishes the primary seasonal conflict that drives serialized character arcs toward the finale.
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Season 6 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 6 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 6: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

13%
88%
Mytharc (3): Crucial lore & season climaxes
Core (21): Character development & subplots
Side Quest (0): Standalone / filler
S6·E1 Mytharc

Billy Ocean

Jan 6, 2006

Billy's adventure begins when he is eaten by a whale. Will it end when he's eaten by Pinnochio?

S6·E2 Core

Hill Billy

Jan 6, 2006

Billy set out on a heart-wrenching quest to make his life-long dream of juggling chickens come true.

S6·E3 Core

Keeper of the Reaper

Jan 13, 2006 · 15 min

When Billy's dad gets a job in another town, who gets to keep the Grim Reaper? Rather than behaving like spoiled children, Billy and Mandy behave like spoiled adults and settle th

S6·E5 Core

Major Cheese

Jan 20, 2006

An absurd story about two kids, a spinny thing, and the Grim Reaper dressed like a cheese flavored snack.

S6·E6 Core

Modern Primitives

Jan 27, 2006

Billy discovers a modern stone-age caveman buried in his front yard. Will the Neanderthal ascend the evolutionary ladder and blend in with modern society? Or will he snap and go

S6·E7 Core

Giant Billy and Mandy All Out Attack

Jan 27, 2006

When Billy and Irwin want to see giant monsters fight, Grim risks Mandy's wrath to transport the boys to mystical Japan.

S6·E8 Core

The Wrongest Yard

Mar 20, 2006

Tired of being beaten up by jocks, Billy and Irwin join the football team in the hopes that they'll become cool enough that nobody will bother them anymore. It doesn't work.

S6·E9 Core

Druid, Where's My Car?

Mar 20, 2006

When Billy loses his kite in a giant oak tree, only a professional druid can save the day!

S6·E10 Core

Herbicidal Maniac

Mar 21, 2006

Mr. Skarr is zapped by Grim's scythe and discovers that he has a green thumb. Literally.

S6·E11 Core

Chaos Theory

Mar 21, 2006

What happens when the Goddess of Chaos takes a holiday? Only her boyfriend knows for sure...

S6·E12 Core

A Grim Day

Mar 22, 2006

What could be more exciting than a day off for the Grim Reaper? A day off with giant lawn gnomes proves to be a good start.

S6·E13 Core

Pandora's Lunch Box

Mar 22, 2006

More than just lunch lurks in the lost lunchbox of this little lady! Will Billy and Mandy succumb to the spectral sandwiches inside the sinister sarcophagus of snacks?

S6·E14 Core

Billy and Mandy vs. the Martians

Mar 23, 2006 · 15 min

Grim finally manages to escape from Billy and Mandy, but finds himself working for an even more sinister force-- the Martian Grim Reaper and his zombie army.

S6·E15 Core

Dumb-Dumbs and Dragons

May 12, 2006

Billy wants to become a hero and must fight a dragon, but is he the hunter or the hunted? Or just plain stupid?

S6·E16 Core

Fear and Loathing in Endsville

May 12, 2006

A drive across town to take Dracula to the local diner turns into an eleven minute comedic nightmare of epic proportions.

S6·E17 Core

Dad Day Afternoon

Jun 5, 2006

A drive across town to take Dracula to the local diner turns into an eleven minute comedic nightmare of epic proportions.

S6·E18 Core

Scary Poppins

Jun 5, 2006

When Mandy pushes her parents too far, will an imported nanny be able to break her will?

S6·E19 Core

Hurter Monkey

Jul 10, 2006

Billy and Mandy trade Grim in for a monkey butler. In order to get his life back, Grim has to return and clean up the mess... with a vengeance.

S6·E20 Core

Goodbling and the Hip-Hop-Opotamus

Jul 10, 2006

A misplaced scythe blast turns boring old Principal Goodvibes into an old school rapper determined to rule the school with a bling fist, a beat-boxing hippo, and some really fly sh

S6·E21 Core

Spidermandy

Jul 24, 2006

Jeff the Spider infects Mandy with the spider pox and kicks Billy out of his own bed. Both problems can only be solved if Billy confronts his fear of his estranged son.

S6·E22 Core

Be A-Fred, Be Very A-Fred

Jul 24, 2006 · 30 min

The Grim Reaper is excited to be the new spokesmonster for a major corporation, until he discovers that part of his job is babysitting the world's most obnoxious monster.

S6·E23 Mytharc

The Crass Unicorn

Aug 9, 2006

It's not all sunshine and lollipops in the Enchanted Forest, and only Billy can set things right.

S6·E24 Mytharc

Billy & Mandy Begins

Aug 9, 2006

Billy, Mandy, and Grim each tell their own story about their first meeting.

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