Cecile is a fictional character in the Hey Arnold! TV Series. She is Arnold's pen pal from France. On St. Valentine's Day, after Arnold gets a letter from her, Helga pretends to be Cecile in order to have a date with Arnold. However, Cecile coincidentally planned to meet Arnold in person on the same day. After Cecile encounteres Arnold and the faux-Cecile, Gerald claims to be Arnold and offers to take her out to eat a hamburger, to which she gratefully accepts. Cecile is not seen since.