He dressed up as a ghost.
The character they look for is called the Great Pumpkin. It is a character from the Peanuts comic strip created by Charles M. Schulz. The Great Pumpkin is said to visit sincere pumpkin patches on Halloween night.
The Great Pumpkin.
Most likely Linus
Sally Brown is actually Linus van Pelt's girlfriend. -- Charlie Brown's sister...
Linus from Charlie Brown
The Great Pumpkin
Linus Van Pelt is the character in the Charlie Brown comic strip who is often seen carrying a security blanket that he is very attached to.
Linus
Iago - Disney's Aladdin
Charlie Brown, Snoopy, Linus, Lucy and others in the cartoon strip Peanuts
charlie brown's best friend with the security blanket
Lucy van Pelt is the character on Charlie Brown who loves lemon suckers. She is often seen enjoying them in the comic strips and TV specials.
THE GREAT PUMPKIN
Linus