The Grim Adventures of Billy and Mandy
The Crass Unicorn / Billy & Mandy Begins
S5 E13:
"The Crass Unicorn" It's not all sunshine and lollipops in the Enchanted Forest, and only Billy can set things right. "Billy and Mandy Begins" Billy, Mandy, and Grim each tell their own story about their first meeting.
Starring
Tom Kenny