Patti Mayonnaise is a fictional character from the animated television series Doug, which originally aired on Nickelodeon in the 1990s. She is depicted as a kind and popular girl who is the object of affection for the show's main character, Doug Funnie. Patti is known for her distinctive red hair and her friendly personality. In the series, Patti often participates in various school activities and adventures alongside Doug and their friends. She represents the ideal of a supportive friend and is portrayed as someone who values kindness and friendship. Patti's character contributes to the show's themes of adolescence and social dynamics.