Joanie (born 1998) is the daughter of Cecille Horton.
Joanie had a dinner at CC Jitters with her mother, Joe West, Wally West, Iris West and Barry Allen. There, they discussed about who was a better hero, The Flash or Kid Flash. Joanie thought that Kid Flash was a better hero. Iris revealed to her that Joe knew Kid Flash, and when Joanie asked for his opinion, he couldn't decide which one was better. Suddenly, they were attacked by Clive Yorkin, but Kid Flash "got there" in time and saved Joanie and the others.
- "Crisis on Earth-X, Part 1" (unseen; wedding)
- "Stretched Scene #2" (name on screen)
- She is a fan of Doctor Who. However, Joanie's interest in the franchise was only piqued when Jodie Whitaker was cast as the Thirteenth Doctor.