Billy's junk food craving sparks a bizarre remedy courtesy of Grim, who whips up a concoction using his granny's secret recipe. But the cure-all comes with an unforeseen consequence: a pesky parasite named Yap-yap starts growing inside Billy's back.
Aired: Aug 24, 2001Billy and Mandy outsmart the Grim Reaper in a game to rescue a sick hamster's...
2. Skeletons in the Water Closet
Aired: Aug 24, 2001Billy's mother grows anxious as she senses Grim's growing influence over her ...
Aired: Aug 31, 2001Grim becomes entangled in Mandy's scheme on "Opposite Day" as Billy and Mandy...
Aired: Aug 31, 2001Grim's dreams of becoming a swimsuit model are shattered when he's disqualifi...
Aired: Sep 7, 2001Grim, struggling with his current existence, longs to return to his past life...
Aired: Sep 7, 2001Billy learns the art of mind possession from Grim and starts experimenting on...
7. Fiend Is Like Friend Without the 'R'
Aired: Oct 5, 2001Billy, Mandy, and Grim find themselves transported to the lair of Nergal, a m...
Aired: Oct 12, 2001Billy and Mandy join the Person Scouts to earn a badge by selling cookies, bu...
Aired: Oct 19, 2001Billy's careless rubbing of an old lamp unleashes a curse, summoning Grim's m...
Aired: Jul 19, 2002Billy's mother, Gladys, makes a surprising comeback, fueled by a desire for v...
Aired: Jul 19, 2002Billy and Grim stumble upon cryptic signs of a secretive gathering in Mandy's...
Aired: Jul 26, 2002Trick-or-treaters Billy, Mandy, and Grim experience a Halloween to remember, ...
13. Something Stupid This Way Comes
Aired: Jul 26, 2002A fiend from the Earth's core, Nergal, brings a carnival to the surface in se...
Aired: Aug 2, 2002Billy and Grim plan a surprise birthday party for Mandy, but Grim's struggle ...
Aired: Aug 2, 2002Billy and Irwin are trapped in their favorite video game, Beasts and Barbaria...
16. Hoss Delgado: Spectral Exterminator
Aired: Aug 9, 2002On their school trip to a museum, Billy, Mandy, and Grim stumble upon Hoss De...
Aired: Aug 9, 2002Grim's romantic attempts take a surprising twist when he asks out Eris, only ...
Aired: Oct 4, 2002Billy's junk food craving sparks a bizarre remedy courtesy of Grim, who whips...
Aired: Oct 4, 2002Billy seeks assistance from Grim to cope with relentless taunting from the fo...
20. Big Trouble in Billy's Basement
Aired: Oct 11, 2002Billy unleashes an evil entity by taking the "Bad Book" from Grim, which then...
Aired: Oct 11, 2002Billy's loneliness becomes overwhelming when Mandy and her parents take a day...
Aired: Oct 18, 2002A singing meteor, voiced by Voltaire, befriends Billy and starts to wreak hav...
Aired: Oct 18, 2002Billy, Mandy, and Grim's pizza party descends into chaos as they fall asleep ...
