Marcy Kornblum is a fictional character in the Hey Arnold! TV Series.
She is a member of Tish's all girls bowling team in the episode "Coach Wittenberg"
She is a student at P.S. 118. Her full name is mentioned in the episode "Dinner For Four", when she wins the 4th place prize in P.S. 118's Fight for Peace charity raffle.
She is the narrator in P.S. 118's production of "Romeo and Juliet" in the episode "School Play."
She was also a competitor in the city wide spelling bee in the episode "Spelling Bee". She was eliminated after misspelling the word 'spurious'.
She is shown to be a campfire lass in the episode "Chocolate Turtles".