Richard Steven Horvitz

ZIM discovers his almighty leaders never had any intention of coming to Earth and he loses confidence in himself for the first time in his life, ...

Based on the original animated series Ben 10. Ben becomes targeted by an evil Mechamorph Warrior, named “Retaliator,” who mistakenly ...

Irwin, Hoss Delgado, Jeff the Spider, Fred Fredburger, and General Skarr from the “Grim Adventures of Billy and Mandy” team up to ...

A crossover with The Grim Adventures of Billy and Mandy and Codename: Kids Next Door. While Billy’s Dad is underwear shopping, Billy wears ...

The Spider Queen wants to take revenge on Grim for denying her the rightful place as the Ripper.

Alien werewolves from the Moon attack Earth and steal all the cheese. It’s up to Mandy, Grim, Billy, and Sperg to stop the alien ploy.

When the Boogey Man causes Grim to lose his powers, rank, and title in the Underworld Court for misusing his powers, he plots to seek out ...

Santa has been turned into a vampire, and only Billy and Mandy can turn him back and save Christmas.

Billy’s hamster turned 10 in human years, but was awaiting to see the Grim Reaper. Billy and his friend, Mandy challenge the Reaper to a ...