Jay Jay was a Gungan, one of Jar Jar Binks' three children.
Biography
When Darth Vader crashed on Naboo shortly after the fall of the Jedi Order, Jar Jar Binks was there to greet him and introduced Vader to his children: Jo Jo, Jay Jay, and Jee Jee. The enthusiastic children then pounced on the Sith and covered his armor in crayon.[1]
Appearances
LEGO Star Wars: The Yoda Chronicles — "Escape from the Jedi Temple" (First appearance)