O-Mer was a male Cerean Jedi youngling. Along with fellow younglings Kalifa and Jinx, he was captured on a training mission by Trandoshan hunters. The trio were deposited on the Trandoshan moon of Wasskah, where they were hunted for sport. He would escape the hunters' moon with the help of Padawan Ahsoka Tano.
- Star Wars: The Clone Wars – "Padawan Lost" (First appearance)
- Star Wars: The Clone Wars – "Wookiee Hunt"