Jamie is a girl who debuts in the episode, I Am Arthur Ashe. She is a new student at Xavier, Yadina, and Brad's school, where she attends along with Brian, Harper, Jin, Charlie, and Tyler. She wanted to play freeze tag with Xavier, Yadina, and Brad, but they excluded her. However, they later invite her to the game and they all have fun together. She is voiced by Holly Gorski.
- her gender-neutral name/appearance/clothing and deep voice may leave some viewers uncertain as to her gender, but Brad comments "I hope we didn't hurt her feelings" which uses a female pronoun
- Her name is only shown in the credits and closed captions.
- It is unknown if Jamie is gender neutral