- "That's not regulation."
"I kinda like it."
- ―JJR-579 and JTN-303 upon sighting a painted TIE fighter
JJR-579 was a stormtrooper stationed aboard the Sovereign, the flagship of Grand Moff Wilhuff Tarkin, in 4 BBY. Stationed at the TIE Fighter Depot aboard the vessel, he was present as the Jedi Knight Kanan Jarrus was being transported for his final interrogation. During these events, a TIE fighter that had been commandeered by the Spectres entered the hangar and JJR-579 commented to his companion, JTN-303, that the vessel's colorful paint job was against Imperial regulations. JTN-303 replied that he kind of liked the design, and JJR-579, a dedicated soldier of the Empire, was about to question his companion's loyalty when the TIE fighter set off a stunner, knocking the two stormtroopers out.
- Star Wars Rebels – "Fire Across the Galaxy" (First appearance)
- Battle to the End (First identified as JJR-579)