Sid the Clown

That's Sid. 

He was a Midget Clown from "The Ren and Stimpy Show" Episode 

called "Stimpy's Pet". 

Sid was not a happy Clown, 

he was a grumpy Clown. 

Stimpy told Ren that Sid was a German Attack Clown. 

Sid the Clown reminds me of adult Baby Hermon 

from Who framed Roger Rabbit, Tummy Trouble, 

Roller Coaster Rabbit, and Trail mix-up.
Sid was a grumpy German Attack Clown because 

he attacked Ren all the Time.