• Air date: 25 Feb '05 13 episodes
      This season has 13 regular episodes. This season marks the first appearance of the three nerds of the Secret Snake Club, a school club dedicated to snakes and their dark powers. Also appearing are Thromnambular, a mysterious talking skull that grants wishes; Wiggy Jiggy Jed, Billy's ideal pet, made from magically combining four dogs; an Invisable duck that makes farting noises; Principal Goodvibes, the friendly but boring principal at Billy and Mandy's school; Daisy, a chupacabra that steps out
  • List of Episodes (13)
    • 1. The Secret Snake Club

      25 Feb '05
      "The Secret Snake Club" At school, Billy, Mandy, and Irwin look for a club to join. Irwin plans to join the Macrame club to meet girls; Billy inquires on the Junior CIA club, which forcefully recruits him; Mandy joins the "Secret Snake Club", a snake-themed club consisting of three geeks. The nerds reveal that their "secret agenda" is to resurrect Shnissugah, a giant snake which lived hundreds of years ago in Canada, to take revenge against the popular kids, but they lack the power of the
    • 2. He's Not Dead He's My Mascot / Hog Wild

      01 Apr '05
      "He's Not Dead, He's My Mascot" When Billy and Mandy's school is preparing for a big game, Mindy entrusts the care of the school's mascot, Fluffy Cat, to Billy, to protect him from being kidnapped by the rival team, the Booty Heads. At Billy's house, Fluffy Cat is a disaster, so Billy's mom throws him into the basement, where the cat gets inside Grim's trunk, absorbing its powers. A giant Fluffy Cat appears just before the game wreaking havoc. "Hog Wild" As Billy is tired of all the rules in
    • 3. The Bad News Ghouls / The House Of No Tomorrow

      08 Apr '05
      "The Bad News Ghouls" After Billy's baseball team loses badly against Mindy's, Grim decides to coach them. Mandy is not allowed on the team, as Billy is reluctant to let girls play, although he does not realize Mindy is a girl too. Mandy puts on a baseball cap and, assuming the role of "Manfred", pitches for Billy's team anyway. With additional help from ghoulish players which played in the Underworld Little Leagues alongside Grim, Billy's team wins when Pud'n hits a home run. "The House of No
    • 4. Happy Huggy Stuffy Bears / The Secret Decoder Ring

      15 Apr '05
      "Happy Huggy Stuffy Bears" After a trip to the mall, Mandy becomes the spokesperson for Happy Huggy Stuffy Bears, a new stuffed toy in town. After the success of her commercial, Mandy gives away stuffed bears to other children, who start wreaking havoc in the city. Eris, the goddess of chaos, is behind the toys, which mind-control the children into creating chaos. Mandy decides not to share control of the world with Eris, and orders Grim to destroy the toys. "The Secret Decoder Ring" When
    • 5. Wild Parts / The Problem with Billy

      03 Jun '05
      "Wild Parts" One night a strange odor travels through the city, prompting the noses of all the people, including Billy's, to follow it. The next night, Mandy, who is noseless, and Grim decide to wait outside Billy's house for the event to repeat. When the odor reappears, the nose parade leads them to the shopping mall, where they meet a "Nasalmancer", a nose wizard who is trying to take over other people's noses since he lost his own. Billy recovers his nose, but slices it in two, and gives one
    • 6. Wishbones

      10 Jun '05
      "Wishbones" After Grim's robe comes out of the washing machine, Billy and Mandy find Thromnambular, a talking skull with ruby eyes and a number nine imprinted on his forehead. Grim tells them that the skull is a magical artifact imprisoned on Earth that must grant his nine wishes to be free. When Mandy asks Grim why he has not used any of the wishes, Grim tells her that the skull will corrupt the wishes and end up affecting the wisher. Despite this, Billy runs away with the skull and makes the
    • 7. Dream Mutt / Scythe For Sale

      17 Jun '05
      "Dream Mutt" When Billy gets the opportunity to adopt one of four dogs, he says he wants them all. Grim uses his scythe to magically combine the dogs and create Billy's dream dog, who calls himself Wiggy Jiggy Jed. Although initially Billy and Jed are best friends, their relationship falls apart when Billy tells Jed to sleep outside. Jed uses the powers of Grim's trunk to build a giant machine to capture the beds of all people. Billy throws Jed a dish of primordial ooze and he
    • 8. Jeffy's Web / Irwin Gets a Clue

      24 Jun '05
      "Jeffy's Web" When Billy gets under his house's foundation, he encounters again his "son", Jeff the Spider, who has just laid eggs. Jeff tries to make things right with Billy so he can take care of the baby spiders, as he is going to die after the eggs hatch. Naturally terrified of seeing Jeff, Billy runs away and a wild car chase ensues. The eggs hatch, and Grim decides to refill Jeff's hourglass that represents his lifetime so he does not die and can continue to scare Billy. "Irwin Gets a
    • 9. Duck! / Aren't You Chupacabra To See Me?

      01 Jul '05
      "Duck!" After Grim has a nice dream, a nightmare escapes the back of his head in the shape of a supernatural, invisible duck that makes farting noises. The duck follows Grim everywhere, causing him embarrassment with the non-existent farts, and to end up in jail. The duck repeats the strategy, following other citizens, including Irwin and Billy's dad, resulting in all of them going to jail too. The duck tries to annoy Mandy, but she remains imperturbable by its presence. The duck disappears and
    • 10. Zip Your Fly / Puddle Jumping

      01 Jul '05
      "Zip Your Fly" Billy and Mandy find a supernatural zipper from Grim's robe, and while Billy uses it to create mischief, Mandy gets herself in a sticky situation. "Puddle Jumping" When Billy jumps into a supernatural puddle (a Cosmic Sinkhole, according to Grim), it takes him to the home of Granny Applecheeks, who wants to bake him into a pie. It is up to Mandy and Grim to save him if the puddle can take them to the right place.
    • 11. Runaway Pants / Scythe 2.0

      08 Jul '05
      "Runaway Pants" At school it is time for the "Presidents Fitness Test", but Billy is absolutely unfit for exercise. On the other hand, Nergal Junior uses his shape-shifting powers to become fit at will and excel in every test. Billy asks Junior to transform into a pair of pants that he can wear, so he can run fast and win the 50-meter race. Since Junior has never attempted to transform into inanimate objects he cannot stop running and cannot revert to his human form. Billy keeps running forever
    • 12. The Firebird Sweet / The Bubble with Billy

      08 Jul '05
      "The Firebird Sweet" When Billy buys a new cereal, a phoenix emerges from the box and attaches to his head, annoying everybody. Since the phoenix cannot be removed because it revives every time it is destroyed, Billy, Mandy and Grim seek help by going to the factory where the cereal is produced, which is run by Eris, the goddess of chaos. Mandy tricks the phoenix into leaving Billy and attacking Eris instead. It is revealed that all the events were really an episode-within-an-episode. "The
    • 13. Billy Idiot / Home of the Ancients

      15 Jul '05
      "Billy Idiot" When Billy is accepted to Mrs. Pollywinkle's dancing academy, his father tries to persuade him to forget about dancing because of his own bad experience as a child during a recital. At the academy it is revealed that Mrs. Pollywinkle is actually a powerful, dark witch set on stealing Billy's soul. Billy's dad unexpectedly comes to rescue, challenging Mrs. Pollywinkle to a dance competition, which he wins using a powerful dance move. Billy's dad tells Billy to follow his dream of