Red McArthur (previously known as Bertha and Rebecca), is a female fourth-grade student at South Park Elementary who made her first appearance in the Season One episode, "Cartman Gets an Probe". She is, arguably, the fifth-most prominent female character in the fourth grade, behind Wendy, Heidi, Bebe, and Nichole. Cartman seems to hold no prejudice toward her for her redheadedness.