Original Air Date: August 1, 2003
At a medieval fair, Billy is impressed with Irwin's realistic armor and wants one for himself, too. Grim fulfills his wish by giving him a cursed armor. Soon when Billy wants to go to the bathroom the curse is revealed that one cannot leave the suit until he or she beats someone in a challenge.
"Terror of the Black Knight" provides examples of:
- Curse Cut Short: Grim tells Irwin to not make himself go medieval on his ass, but Irwin interrupts before he can finish the last word. Doubles as a Shout-Out to Pulp Fiction. note
- Didn't Think This Through: Billy actually thought challenging Grim to a sword fight was a good idea. He immediately regrets it when not only is he unable to pick up his sword (which is also cursed), but Grim takes out his "weapon of choice".
- Potty Emergency: Billy wants a badass knight costume just like Irwin, so Grim gives him one, but unfortunately, Billy drank too much punch that he has to use the bathroom, and he can't get the knight armor off unless he wins a challenge with someone. He then wins a breakdancing contest against Mandy, but as soon as he gets his armor off, he doesn't have to use the bathroom anymore. You can also hear splashing sounds during the breakdance scene.Mandy: So, aren't you gonna rush over to the boys' room?
Billy: You know the funny thing? I don't need to go anymore.
[Billy walks off]
Mandy: Ew.
Original Air Date: August 1, 2003
The episode starts outside Billy's house, with him counting in a hide-and-seek game. An annoyed Mandy tells Billy that she and Grim aren’t playing hide-and-seek with him. Despite this, Billy walks off looking for Mandy and Grim, whom he stupidly believes to be hiding. As Billy looks all over the neighborhood as seeker, he hears a thrash metal song in the distance and notices a band practicing in a garage; the band is Purple Filth, of whom he is a huge fan. Sperg is the lead singer of the band and presumably the lead guitarist. Billy walks into the garage and interrupts the band’s rehearsal, which is in preparation for a battle of the bands contest that night. He begs the band members to make him a part of Purple Filth, to which Sperg asks what instrument he plays. Billy demonstrates that he has a knack for armpit farting. Grim and Mandy eventually stumble upon Billy in the garage. Sperg, seemingly infatuated with Grim’s dark and foreboding appearance and personality, demands Billy make him play the guitar. Grim plays an elongated and crushing guitar solo, resulting in the entire neighborhood burning down. Although he attempts to apologize, Sperg makes him a member of Purple Filth on the spot.
Back at Billy’s house, Harold tells his discouraged son that it’s easy to be a rockstar and that virtually anybody can do it; all that is required is long hair, tight pants and makeup. He then suggests to Billy that they both enter the battle of the bands contest as a father-son duo.
Later that night at an Endsville arena, Billy and Harold show up to the concert in their rockstar gear; Billy has red and black spiked hair, blue and white face paint and is in his underwear, while Harold has his hair slicked back with white face paint and a black star on one eye, leather pants, gloves, fishnets on his arms with bat wings under his arms, and a leather harness with a skull on his chest. Although Billy refers to him as “dad,” Harold tells him that for tonight, his son refers to him by his rockstar nickname: Mogar. He informs Billy that on his signal, they both attack the stage in a literal battle of the bands.
The contest begins. First up are Irwin and Pud’n. Pud’n plays a toy piano while Irwin nervously sings completely out of sync with the music. The audience boos them. The next act is a kid in a pink bunny suit playing a trumpet, who is subsequently booed also. Next up is a kid performing a plate-spinning act, which isn’t even a music act to begin with. As expected, he too is booed. Harold tells Billy that they’ll be attacking the stage very soon.
The last official act to go on stage is Purple Filth. Their stage set up includes pyrotechnics and a giant robotic, demonic-looking bull's head. The crowd goes crazy as the band shreds. Clearly the more prepared act of the night, it looks like the contest may go to them. However, while the band is playing, Harold gives Billy the signal to attack the stage. He screams and makes inhuman noises, prompting Purple Filth to get distracted and stop playing. With all the attention on the father and son, Harold jumps out of his seat and begins to fly with his underarm bat wings, leaving behind a very confused Billy. As Harold glides through the air, Billy tells him he had no idea he could fly, resulting in his dad dropping like a rock from the sky and onto the stage, destroying Purple Filth’s equipment and band set up.
When Billy runs down to the stage, Harold informs him that the show must go on. After Billy expresses his insecurity of performing in front of a massive crowd who booed off nearly every act of the night, his father gives him words of encouragement that all that matters is that Billy enjoys himself. A confident Billy steps up to the mic on what is left of the stage and performs a medley of armpit farts. When Billy finishes, the crowd is dead-silent for several seconds. Moments later, he lets out a real fart, to which the stadium delivers a thunderous applause. Although Billy wasn't on the lineup, he is presumably crowned the winner of the battle of the bands contest.
"Battle of the Bands" provides examples of:
- Achievements in Ignorance: See Puff of Logic below.
- Awesomeness Is Volatile: Grim’s guitar solo results in the whole neighborhood being burned to the ground.
- Battle of the Bands: Exactly What It Says on the Tin.
- Characterisation Click Moment: After spending the earlier part of the series as a somewhat down-to-earth guy, it's in this episode where Harold starts acting as absurd and stupid as his son.
- The Power of Rock: Grim’s guitar shredding is so powerful that it literally burns down the entire neighborhood.
- Puff of Logic: Harold "attacks the stage" by taking flight with his winged costume, leading to this exchange:Billy: I didn't know you could fly!
Harold: Fly?
[Harold plummets to the ground] - Shout-Out:
- When Grim is asked by Billy to play Sperg’s guitar, he comments, “I did used to play that Stairway to Heaven thing in high school.”
- Harold has the same face-paint and design of Gene Simmons of the rock band KISS, while Billy wore a red-haired wig and a blue and white face similar to Marilyn Manson.
- That Man Is Dead: At least for tonight, Harold has become...MOUGAAAR.
Original Air Date: August 15, 2003
After missing out on a school trip, Grim takes Billy, Mandy, and Irwin to the "Halls of Time" for a tour. There, Billy and Irwin fool around and tamper with the hourglasses that symbolize each person's lifespan. When they leave, they accidentally leave their own hourglasses, including Grim's, upside down, resulting in the group getting younger as time passes.
Grim then hurries back but one by one the kids start to disappear by going before birth, Grim intentionally lets Mandy disappear. However, while gloating he loses so much time that he cannot restore his own hourglass to its correct position, turns into a baby as he disappears too, leaving the episode as a Downer Ending.
"The Halls of Time" provides examples of:
- Curse Cut Short: This happens when Mandy ceases to exist after Grim purposefully doesn’t flip her hourglass right side up.Mandy: Grim, what do you think you're doing?! Why, you no good pile of—! (Poof!)
- Death by Cameo: Billy accidentally drops and breaks show creator Maxwell Atoms' hourglass of life, causing him to poof out of existence immediately after coming up with his "best idea ever" (a fat walrus).
- Death by De-aging: Billy and Irwin end up putting theirs, Mandy and Grim's hourglasses upside down. They end up becoming younger and younger until they vanish.
- Death's Hourglass: Parodied. Not only do Billy and Irwin flip theirs and Mandy's hourglass, resulting in their lives instead moving backwards until the point where they don't exist anymore, but they even flipped Grim's hourglass too (odd considering Grim's hourglass was enormous.) They also break at least one, causing that person (the show's creator) to blip out of existence.Irwin: Whose hourglass was that?
Billy: Eh, probably no one special. - Downer Ending: This episode has arguably one of the darkest; Irwin, Billy, Mandy, and Grim all fail to flip their hourglasses right-side up in time and de-age out of existence, but they were perfectly fine in the next episode.
- Hand-or-Object Underwear: When Mandy regresses to being a fetus, she covers her shame with her hands while speaking to Grim.
- Killed Offscreen: Well, de-aged offscreen. Billy unknowingly causes his father to wipe out of existence, but unlike Billy himself, we don't actually see it.
- Mass "Oh, Crap!": Everyone has this reaction when they realize Billy and Irwin put the hourglasses back upside down.
- Merlin Sickness: Everybody ages backwards when Billy and Irwin flip the hourglasses upside down.
- Mistreatment-Induced Betrayal:
- Irwin shakes his brother's hourglass out of revenge over a wedgie he gave him, causing the latter to age backward and forward, then erased him from existence by throwing it.
- While Grim does try to reach Billy's hourglass to flip it back to its right position but ultimately fails, he lets Mandy’s run out on purpose for how she treated him.
- Rapid Aging: Irwin gets back at his Big Brother Bully by shaking his hourglass, with his brother last seen scaring away a girl he's flirting with because he's turned into an old man.
- Scenery Censor: When Mandy, Billy and Irwin revert back to being infants, they are left unclothed. They cling onto Grim in ways that keep their "naughty bits" hidden.
- Unwitting Instigator of Doom:
- Billy notices his dad's hourglass has almost run out (he was choking on food while watching TV), so, in order to save his life, Billy flips it upside down, thus reversing the damage. What he doesn't know is that by doing so, his dad would age backwards.
- Both Billy and Irwin mess around with other people's hourglasses and flip them the wrong way, causing them, along with Mandy and Grim, to die by de-aging.
