Date of First Appearance:
June 18, 1968;
Named October 11, 1971

Schulz on Marcie:
"One day I sent [Peppermint Patty] to camp, and a little girl came into her tent one night and said, 'Sir, my stomach hurts.' That was Marcie. Now I think Marcie and Peppermint Patty are as much of the strip as any of the other characters. I think all the characters in the strip are really very fond of each other, but they are also very hard on each other. Some are kind of innocent, some are brighter than others, but they all work. If a character works, and if the personality that you give the character provides you with ideas, then that character will stay. If the character just doesn't work, then out he or she goes."

Marcie is Peppermint Patty's best friend. From the moment they met at summer camp, Marcie has called Peppermint Patty "Sir" out of misguided manners. They seem to have nothing in common, yet that is what makes their friendship so genuine. Marcie is the smartest of the Peanuts gang; she's also the most naive. There is an innocence to Marcie, and Peppermint Patty is her protector.