Billy

Billy is the Main Protagonist of Cartoon Network's: The Grim adventures of Billy and Mandy.

Fanon Wiki Ideas So Far

 * Billy (Billy and Mandy) vs Ed (Ed Edd N Eddy)

Possible Opponents

 * Patrick Star (Spongebob Squarepants)
 * (With Mandy) Dipper and Mabel (Gravity Falls)
 * (With Mandy) Phineas and Ferb
 * Timmy Turner (Fairly Odd Parents)
 * Bart Simpson (The Simpsons)
 * Gumball Watterson