Watterson is a minor character in The Loud House. He makes his first appearance in "Pets Peeved".
He is an Old English Sheepdog puppy, with fur that acts like hair covering his two eyes, and has a nose similar to Charles'.
- He resembles a smaller version of Cubitus from the comic series of the same name.
- In keeping with the Loud pets being named after famous cartoonists, he is named after cartoonist Bill Watterson, who created Calvin and Hobbes.
- His hair style resembles Lucy's, with his bangs completely covering his eyes.
- Both Luna and Rita have mistaken his butt for his face.
- In the Polish version, his name is Wredotek.