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.
Some time after the destruction of the first Death Star, Jar Jar took Jee Jee to Tatooine for his child's birthday.
Originally green-skinned in LEGO Star Wars: The Yoda Chronicles story Escape from the Jedi Temple, Jee Jee becomes orange like Jar Jar Binks for the follow-up episode Race for the Holocrons. Also, the DVD/Disney+ subtitles as well as the script for Race for the Holocrons identifies Jee Jee as "Chi Chi", implying that this may be a different Gungan altogether.