Oscar the Grouch (performed by Caroll Spinney) is a character on Sesame Street. Just as his last name suggests, Oscar is indeed grouchy. He is the complete opposite from people. He lives in a trash can, loves gross things and hates nice things.
- Oscar the Grouch will appear on Jaden's Adventures of Don't Eat the Pictures.
- Jeffrey will meet Oscar the Grouch in Jeffrey & Friends' Storm Adventures of Don't Eat the Pictures.
- Oscar the Grouch will return in Jeffrey, Jaden & Friends' Storm Adventures of Follow That Bird.
- Oscar the Grouch will appear again in Tammy, DJ and The Adventures of Elmo in Grouchland.
- Oscar will make a cameo in Jeffrey, Jaden & Friends' Storm Adventures of Night at the Museum: Battle of the Smithsonian.
- Oscar will appear again in Jeffrey, Jaden, Hiccup & Juniper Lee's Storm Adventures of A Muppet Family Christmas.