Hector: We'll play a game. It's called "Skarr Is A Doo-Doo Head".
Skarr: That's not even a real game!
Running gag: Estroy bugging Ghastly with love
During the end credits, Billy from The Grim Adventures of Billy and Mandy is seen heckling and mooning Skarr on the freeway.
A grunt named Tony is introduced in this episode
When General Skarr is driving we can see that
he has a Grim toy.