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10 Episodes 2006 - 2007
Episode 1
Tue, Jun 6, 2006 15 mins
The root of Billy's destructive nature is discovered with the help of Lord Pain.
Episode 2
Fri, Oct 20, 2006 30 mins
Serpentine mayhem ensues when Billy turns to the Secret Snake Club to help him get out of P.E.
Episode 3
Fri, Mar 2, 2007 15 mins
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.
Episode 4
Fri, Mar 9, 2007 30 mins
A shape-shifting monster loves pizza; a lovesick mermaid falls in love with an idiot.
Episode 5
Fri, Mar 16, 2007 15 mins
General Skarr is lured back to the dark side when his former villainous companions return to live in his house.
Episode 6
Fri, Mar 23, 2007 15 mins
Mandy needs her beauty sleep, but Billy plans to keep her up all night.
Episode 7
Mon, May 28, 2007 15 mins
Billy, Mandy and Grim must preserve Earth's dairy stock after they are kidnapped by aliens obsessed with cheese.
Episode 8
Fri, Sep 21, 2007 15 mins
Everyone's favorite ghoul is back. But this time, Lionel Van Helsing, the infamous vampire hunter,
Episode 9
Fri, Sep 28, 2007 30 mins
Billy and Mandy discover that the world's most obnoxious wizard has turned bad,
Episode 10
Sat, Jan 2, 2021 30 mins
Nergal the fiend from the center of the Earth returns to the surface emerging a carnival with him trying once more to make friends. In the following Billy tries to help Nergal make friends by being considerate but Nergal fails to apply correctly his advice. When Nergal is told that Grim was forced to be Billy and Mandy's friend-slave Nergal then decides to force the world to be his friends by turning them into dark beings similar to him. In the end Nergal turns Billy Mandy Grim and ev