The Grim Adventures of Billy & Mandy (season 6)

The sixth and final season of The Grim Adventures of Billy & Mandy consists of 11 episodes.

The Grim Adventures of Billy & Mandy
Season 6
Country of origin	United States
No. of episodes	11 (21 segments)
Release
Original network	Cartoon Network
Original release	October 6, 2006 – November 9, 2007
Season chronology

This sixth season has eleven regular episodes. Midway through this season, the special episode "Billy and Mandy Moon the Moon" was shown, and the TV movies Billy & Mandy's Big Boogey Adventure and Billy & Mandy: Wrath of the Spider Queen had first aired. Also, this season is the first and only one ever to be produced in 16:9 widescreen.

In this season, special debut appearances are made by Pinface (a parody of Pinhead from Hellraiser); the mummy of the Pharaoh King Popen Locken, who is Irwin's maternal grandfather; the Abominable Snowman, who is to be reaped by Grim; King Triceps, ruler of the ocean, and his daughters Hariel and Uvula (parodying The Little Mermaid); Hector Con Carne and Major Dr. Ghastly (from Evil Con Carne), who try to recruit General Skarr back to their army; Lionel Van Helsing, a vampire hunter seeking to destroy Dracula; and Del Uglio, a Mexican luchador, who turns out to be Billy's identical twin brother.

Lord Pain returns, now serving Mandy, instead of Grim; the Secret Snake Club is also back, now trying to avoid physical education; Nergal and his family engage in a pizza war against Billy, Mandy and Grim's own pizzeria; Nergal Junior and Irwin battle for the strong and possessive romantic love they have for Mandy; Dracula is revealed to be Irwin's paternal grandfather; Nigel Planter discovers the supernaturally dark and evil truth behind the lightning-shaped scar on his forehead; and Billy, Mandy, and Grim find themselves in Mexico to save the Día de los Muertos festivities.

The episode “Billy and Mandy Moon the Moon” aired as fifth and final chapter of Cartoon Network’s Invaded event in May 2007. The event first started with Foster’s Home for Imaginary Friends, and continued with Ed, Edd, n Eddy, My Gym Partner’s a Monkey and Camp Lazlo. This event came about in 2006 when Cartoon Network was teaming up with Kraft to create a special event that was pitched as E.T the Extraterrestrial meets Kraft Mac ‘n’ Cheese.

In the episode "Heartburn", the last and final regular episode of the series, Mandy temporarily overcomes her dark and sinister nature and finally romantically kisses Irwin on the lips. She quickly goes back to her old sinister, power-hungry self. There is also an Austrian therapist called Dr. Hans Frankfurt who was seen in the episode "Everything Breaks" and the Wrath of the Spider Queen movie.

Episodes

The Grim Adventures of Billy & Mandy season 6 episodes

No. in series	No. in season	Title	Directed by	Story by	Storyboarded by	Original air date
67a	1a	"Everything Breaks"	Matt Engstrom and Russell Calabrese	Mike Diederich	Mike Diederich	October 6, 2006
As Billy behaves more reckless than ever and cannot stop breaking everything in sight, Mandy thinks he should go some place where he can release all his urge to destroy until he gets tired of it. Mandy, Grim, and Irwin go to Level 9, home of the fearsome warrior Lord Pain, to convince him to take Billy. Billy receives psychological treatment and it is revealed that his desire to destroy stems from lack of attention when he was younger. Lord Pain abducts him, and together they start destroying everything in Level 9, which seems to be is uninhabited. Billy is still not satisfied, so he and Lord Pain return to Endsville and carry on breaking everything.
67b	1b	"The Show That Dare Not Speak Its Name"	Kris Sherwood	Alex Almaguer and Holly Almaguer	Alex Almaguer	October 6, 2006
When Grim leaves the house to meet someone he met on the internet, Billy looks inside Grim's trunk for something to entertain himself. Billy finds a magical talking Rubik's Cube, which releases the demon Pinface, who has bowling pins in his head. Pinface proceeds to call his minions to conquer Earth, but the minions are more interested in throwing a house party. It is revealed that Grim and Pinface already know each other, and Grim even broke up with Pinface's sister. Billy's father ends up cheating and solves the magical cube by rearranging the stickers, trapping Pinface and his minions inside it again.
68a	2a	"The Secret Snake Club vs. P.E."	Shaun Cashman and Russell Calabrese	C.H. Greenblatt	C.H. Greenblatt	October 20, 2006
As Billy realizes the three geeks of the Secret Snake Club get doctor's notes to avoid Physical Education (P.E.) class, he wants to know their secret to avoid the class too. All the boys in the class join the club and all, except Billy, get doctor's notes from Billy's dad, who poses as a doctor. While Billy is the only one exercising in the class, the Snake Club summons a snake to destroy the gym. Since the invoked snake is tiny, Sperg uses Grim's scythe to make it a giant. Mandy and the other girls beat the boys and their snake because they did appreciate the P.E. class as an outlet for their aggression.
68b	2b	"King Tooten Pooten"	R. Michel Lyman	C.H. Greenblatt and Ian Wasseluk	Ian Wasseluk	October 20, 2006
When Billy, Mandy, and Grim attend an Ancient Egypt exhibit at the museum, they meet with Irwin who explains that, as his mother is a mummy, they are visiting Irwin's grandfather, the great Pharaoh King Popen Locken. Later that night, Irwin's grandfather visits Irwin in his room and offers him the Pharaoh's crown and the possibility of building his own pyramid to attract women; Irwin accepts, calling himself King Tooten Pooten, and soon they turn the citizens into slaves to build the pyramid. Against his mother's wishes, Irwin decides to finish the pyramid; however, there is something he did not anticipate, as he, the Pharaoh, needs to remain entombed inside it.
69a	3a	"Billy Gets an 'A'"	Kris Sherwood	Alex Almaguer	Alex Almaguer	January 5, 2007
When Billy fails an important test, the result of which will go into his permanent record, he asks Grim to magically alter his grade from an "F" to an "A"; as Grim reluctantly changes the grade, Billy becomes a genius, but reality is thrown completely off balance. Mandy and Grim go back in time to stop the past Grim from helping Billy, but it does not work. They keep going back in time to different epochs, each time meeting another Grim, eventually trying to stop Billy's ancestors from conceiving him, but nothing works. After meeting Billy's distant dinosaur relative, the episode ends abruptly as Grim wonders what the end of this could be.
69b	3b	"Yeti or Not, Here I Come"	Matt Engstrom	Chris Headrick	Chris Headrick	January 5, 2007
After watching the Unsolvable Mysteries TV show, Grim realizes he forgot a million years ago to reap the Abominable Snowman living in the Himalayas. Billy, Mandy, and Grim go there to finish the job and also to obtain videographic proof of the snowman's existence. The Yeti, who likes to be called Abom, manages to escape Grim more than once before finally being trapped by the moving glacier. Grim watches the TV show again, but he may have forgotten to reap the Loch Ness monster too.
70a	4a	"Nergal's Pizza"	Gordon Kent	Mike Diederich	Mike Diederich	March 2, 2007
When Nergal comes to tell the guys about his new pizza joint, Grim thinks he can do better by using his Granny's recipe. A pizza war ensues between Nergal's Pizza and Grim's Pizza, with each pizzeria launching TV ads and discrediting each other. Nergal Jr. uses his shape-shifting abilities to infiltrate Grim's pizza and replace Granny Grim's hot sauce with a "ghastly elixir". The result is pizzas becoming monsters and attacking the city, and the citizens developing parasites similar to Nergal. Nergal and his family leave the city just as Grim's sauce explodes.
70b	4b	"Hey, Water You Doing?"	Kris Sherwood	Ian Wasseluk	Ian Wasseluk	March 2, 2007
After Billy, Mandy, and Grim are disappointed with the SassyCat amusement park submarine attraction, Grim uses his powers to take them to the bottom of the ocean to have a real magical adventure. They are sentenced to death for trespassing into the Googen Kingdom by King Triceps, a wrestling merman. The king's daughter, Hariel, also a mermaid, stops the sacrifice and tries to marry Billy to inherit the kingdom. It is revealed that King Triceps is actually Hariel's sister, the sea witch Uvula, who also tries inherit the kingdom. A cat fight ensues between the two ladies, which ends when Billy agrees to marry both of them. The plot is revealed to be a story Billy is telling to Miss Butterbean, who initially asked him what happened to his report.
71a	5a	"Company Halt"	Kris Sherwood	Maxwell Atoms and Alex Almaguer	Alex Almaguer	March 30, 2007
As General Skarr is once again annoyed by Billy, Hector Con Carne and Major Dr. Ghastly arrive in his house with the intention of luring him back to the recently relaunched Evil Con Carne world domination organization. Although initially refusing to rejoin, Skarr later accepts with the condition that Billy and the other neighbors be destroyed. After a few weeks of living together and preparations, Evil Con Carne's ultimate weapon is revealed to be an army of tanks that shoot giant rubber bands. Skarr's all-out attack over the neighborhood is foiled when Billy tricks Hector into shooting Skarr's garden and they get into a fight. Special guest stars: Phil LaMarr as Hector Con Carne, Frank Welker as Boskov, and Grey DeLisle as Major Dr. Ghastly
71b	5b	"Anger Mismanagement"	Matt Engstrom, Gordon Kent, and Russell Calabrese	Chris Headrick and Stephen DeStefano	Stephen DeStefano	March 30, 2007
As General Skarr has trouble finding a job, the recruiter tells him to attend anger management classes if he wants to work again. Skarr finds out Mandy and Grim are attending too, Mandy for staring at the school monitor, and Grim for enjoying his job too much. The instructor of the class, Larry, turns out to be a peace-loving, short man riding a tricycle, who teaches the trio ways to calm down when angered, including counting to ten, and using harmless weapons to let go of their anger. Larry invites Billy to the class, and Mandy, Grim, and Skarr all manage to contain themselves; however, Larry himself suffers an episode of rage over a parking space and he is arrested.
72a	6a	"Waking Nightmare"	Juli Hashiguchi and Gordon Kent	Maxwell Atoms and Aaron Springer	Aaron Springer	April 6, 2007
When Mandy finds Billy playing with Grim's gigantic dog, Cerberus, she tells Grim to keep Billy under tight control because she needs a good night of sleep to be ready for the next day's test. With a little persuasion from his own dad, Billy tries to wake up Mandy at night, so she will fail the test and he can score higher than her for the first time. After Grim spends the night guarding Mandy's house from Billy, the latter succeeds in waking up Mandy. It is revealed that this Mandy is in fact Irwin, used as a decoy by the real Mandy, who slept in her dog's house. Mandy passes the test, and Grim is punished for not guarding her properly.
72b	6b	"Beware of the Undertoad"	Matt Engstrom, Juli Hashiguchi, Eddy Houchins, and Kris Sherwood	Michael Diederich	Michael Diederich	April 6, 2007
When Billy, Mandy, and Grim once again go to the beach, Grim warns Billy to avoid swimming too far, because the "undertoad", a frog-like creature, will try to drag him into the sea. Billy encounters the undertoad, and he barely makes it back to the beach. With the dangers of the sea averted, the guys go back home, but the undertoad is set on bringing Billy down, that he follows him to his house. The next day, the undertoad becomes a constant annoyance to Billy, even at school. Grim and Mandy capture the undertoad, and set sail to release him at sea, where they meet the giant Mama undertoad.
73a	7a	"The Greatest Love Story Ever Told Ever"	Gordon Kent and Kris Sherwood	C.H. Greenblatt	C.H. Greenblatt	April 13, 2007
When Irwin lacks the courage to ask Mandy to go with him to the Valentine's Day school dance, he tells Nergal Jr. to do it for him. Mandy mistakes Junior's invitation for his own, and surprisingly accepts to go with him, which naturally makes Irwin jealous. With the ill advice received from his father, to be possessive with Mandy, at the dance Junior becomes overprotective of her, that eventually he and Irwin start fighting, throwing punch at each other and ruining the ball. It is revealed that this was Mandy's true intention all along so that no one could enjoy Valentine's Day.
73b	7b	"Detention X"	Shaun Cashman, Matt Engstrom, and Eddy Houchins	Jeremy Bargiel and Ian Wasseluk	Ian Wasseluk	April 13, 2007
When Billy accidentally food-poisons Miss Butterbean, Principal Goodvibes offers Grim the job of substitute teacher, which Grim accepts as now Billy and Mandy have to obey him. Grim sends misbehaving students to the "Detention Dimension", a place of eternal classroom punishment, until only Mandy remains in his class. Grim tricks Mandy into opening a portal and she is dragged into the dimension too. Mandy proves to be more terrifying than Miss Slither, the giant, rattlesnake-like creature in charge of the Detention Dimension, that Mandy escapes the place and takes revenge on Grim by sending him there too.
74	8	"Billy and Mandy Moon the Moon"	Russell Calabrese, Juli Hashiguchi, and Kris Sherwood	Maxwell Atoms, Nina Bargiel, and Jeremy Bargiel	Maxwell Atoms	May 28, 2007
When Billy is sent to bed after playing with his Dr. Brainiac action figure, he wishes he had an adventure. He notices a strange light outside and wanders into a corn field to investigate; he encounters Sperg, and both of them got caught by a UFO's tractor beam. Inside the extraterrestrials decide to experiment on them. When they return home, it is revealed that Sperg has a bomb implanted in his head, and also that there is a shortage of dairy products; Billy explains that the aliens are stealing Earth's dairy products because they are werewolf-like creatures who need cheese, and they have already mined all the cheese in the Moon. Billy's crazy story is confirmed when too many UFOs appear. Billy says they must assemble a team of dairy superheroes, the Green Squeaker (Billy), Milk Mandy, the Cheese Reaper, and Diary Boy (Sperg), to combat the aliens, but everybody is opposed to the idea. Later, the four of them have been captured and are sent to the Moon to be destroyed, but they escape and try to stop the Moon ship from getting to Earth. The Moon aliens start their transformation into werewolves, and they bite Billy, who becomes a werewolf too. With their backs to the wall, Grim finally chooses to give Billy, Mandy and himself their dairy superpowers. Meanwhile, Sperg sacrifices himself by letting the bomb in his head explode in the control room, crashing the spaceship in the Moon and saving Earth. Note: This was the fifth and final chapter of Cartoon Network Invaded which also concluded with an alternate ending on June 1st and was a very special episode.
75a	9a	"Dracula Must Die!"	Juli Hashiguchi and Eddy Houchins	C.H. Greenblatt	C.H. Greenblatt	September 21, 2007
When vampire hunter Lionel Van Helsing prepares to kill Dracula, Billy, Mandy, and Grim arrive to stop him since Dracula is just senile and harmless. Van Helsing reveals the source of his hatred: in the past, he and Dracula were "best friends forever", until Dracula used his irresistible dance moves to marry Tanya, the woman of his dreams. Tanya arrives too, revealing that she is none other than Irwin's grandmother, making Irwin one-quarter-vampire on his father's side and half-mummy on his mother's side. Van Helsing leaves, but Dracula is unsatisfied with his newfound family of nerds.
75b	9b	"Short Tall Tales"	Russell Calabrese	Maxwell Atoms, Nina Bargiel, and Jeremy Bargiel	Clay Morrow	September 21, 2007
As Billy, Mandy, and Irwin need to write a school report on tall tales, Grim tells outrageous tall tales about Pecos Billy (based on Pecos Bill), Paula Bunyan (based on Paul Bunyan), and John Henry. In Grim's stories, Pecos Billy (Billy) tames a twister using his personal laser-shooting cow-like spacecraft, saving an Arizona trailer park; Paula Bunyan (Mandy) uses her blue ox companion, Babe, to stomp over a villain, creating the Grand Canyon in the process; John Henry (Irwin) digs through a tunnel so fast that he breaks the laws of physics and bursts into the "eighth dimension". After Grim tells them the stories, Mandy informs Billy and Irwin that he is trying to get them F's.
76a	10a	"Nigel Planter and the Order of the Peanuts"	Matt Engstrom	Tim McKeon	Chris Headrick	September 28, 2007
When Billy, Mandy, and Grim go to a joke shop, they find the owner is former boy wizard Nigel Planter, who reveals that his powers diminished and was kicked out of Toadblatt's School of Sorcery. Planter steals Grim's scythe and heads to the school to exact revenge on those who wronged him. The guys seek the help of Planter's sworn enemy, Lord Moldybutt, to find the school. Grim recovers his scythe, and Moldybutt turns out to be in fact only a real estate agent, who informs Planter that he is the heir to the "Peanuts by Planter" farming company.
76b	10b	"The Incredible Shrinking Mandy"	Russell Calabrese and Eddy Houchins	Jeremy Bargiel and Nina Bargiel	Jim Schumann	September 28, 2007
When Grim cannot take any more abuse from Mandy, Billy tries using Grim's scythe to shrink her to mouse size. Instead of shrinking, Mandy becomes a giant and destroys Billy's house. Although Mandy enjoys being a giant for a while, there are inconveniences, as she keeps growing as time passes, and she wants to return to her normal size. Billy is the only one who can cancel the curse he put on Mandy, and he refuses to do so. Mandy grows bigger than the planet, and she finds herself in the "Realm of the Infinite" with other creatures that grow at infinite pace. Mandy starts bossing them around to please her.
77a	11a	"El Dia de Los Muertos Estupidos"	Matt Engstrom	Nina Bargiel, Jeremy Bargiel, Jay Baker, and Maxwell Atoms	Jay Baker	November 9, 2007
When Billy's dad drives Billy, Mandy and Grim to the hamburger restaurant, they somehow end up in Mexico. There, the people are celebrating Dia de los Muertos, but local kids say it may be the last celebration ever, because Del Uglio, a masked and ugly luchador, is set on stealing the "Golden Nose of Chipotle", a prehispanic relic on which the festivity is based. To get to the nose, Del Uglio has one half of the map, while the other half is held by his lost twin brother, who turns out to be Billy. Grim defeats Del Uglio, but it is Mandy who keeps the golden nose for herself, which makes her rich.
77b	11b	"Heartburn"	Kris Sherwood	Nina Bargiel, Jeremy Bargiel, and Chris Mitchell	Chris Mitchell	November 9, 2007
When Billy starts taking pictures with a camera found in Grim's trunk, Grim tells him that is an Underworld's True-heart Camera, which shows the real essence of a person's heart. When Mandy takes Irwin's picture, it is revealed that he is actually half-good and half-evil. Irwin explains that although he was born evil, his dad taught him about love and respect, and he had a change of heart. Upon knowing this, and against her own wishes, Mandy also experiences a painful change, turning good and kind-hearted. Mandy and Irwin finally share a romantic kiss in this episode, but it makes Mandy revert to her old dark and sinister self, which was Irwin's true intention, as he likes her just the way she is.