The Grim Adventures of Billy & Mandy (2001–2007)

Richard Steven Horvitz: Billy, Billy's Dad, Saliva, Various, Hick #2, Monster #3, Bigfoot, Billy's Shadow, Butt Kid, Cabbage Kid, Cave Harold, Creature, Creature #2, Dad, Diver, Dog, Frog, Fruit Vendor, Grandpa, Guy, Guy #1, Harold, Hobnobbins, House, Juror #10, Knight, Little Dog, Male TV, Man, Man #1, Man #2, Mr. Snuggles, Myron, Ogre, Old Billy, Old Man, Partygoer, Pecos Billy, Trykie, Voice #2, Wizard #1, Yaap Yaap, Young Billy, Zombie

Quotes 

• Billy : Why, Grim? Why do the good die young?

  Grim : Well, usually because I get confused.

• [Billy and Mandy have been discussing Billy's fear of clowns, which Mandy has called "pointless"] 

  Billy : Mandy, you have to believe me! The clowns want to take over and become the dominant species! They will

  [shouts at the top of his lungs] 

  Billy : Destroy us all! Destroy us all! Destroy us all! Destroy us all! Destroy us all! Destroy us all!

  Billy : [sitting at his desk in class with his fellow students] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [at the chalkboard, attempting to solve a math problem] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [at his locker in the hallway] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [In Biology class, dissecting a frog] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [on the swingset at recess] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [in the lunch line] 

  [calmly to the lunch lady] 

  Billy : I'll have the chicken

  Billy : [sitting at the lunch table with Mandy and Irwin] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [doing sit-ups with the other kids in gym class] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [in the Boy's bathroom, we see Billy's feet underneath a closed stall] 

  [shouting] 

  Billy : Destroy us all!

  Billy : [getting off the bus with Mandy] 

  [shouting] 

  Billy : Destroy us all!

  [he walks home off screen, still shouting] 

  Mandy : [annoyed]  That's it!

  [pours Grim, piece by piece, out of her backpack] 

• Billy's Mom : Oh sorry, Billy. We weren't laughing AT you, we were laughing WITH you.

  Billy's Dad : I was laughing AT you.

• Billy : Ask me a question. Give me a challenge.

  Grim : Who developed the theory of relativity?

  Billy : That is a trick question, Grim; everyone knows fruit bats are mammals.

• Billy : [whispering]  Hey, Irwin, you gots any gum?

  Irwin : [looking into his backpack]  Well, I have a plum, a drum, even a tiny chum no bigger than my thumb... but no gum, yo.

• Billy : I'm a poet, and I didn't even know that I had the ability that I might be!

• Jeffrey the Spider : Hey, Dad.

  Billy : [frightened]  Get away!

  Jeffrey the Spider : I've got some big news to tell you. I just laid thousands of eggs. You know what that means?

  Billy : Aah!

  Jeffrey the Spider : Yep, you're going to be a grandpa!