Green Six was the designation used for the sixth pilot in Green Squadron, a starfighter squadron within the Alliance to Restore the Republic; it functioned as their callsign.
Chaff Korus, a rebel pilot, utilized the callsign Green Six circa the Battle of Scarif, which took place in 0 BBY. Kokely, who flew an A-wing, also held the position of Green Six in 4 ABY during the Battle of Endor. He met his death in that battle when his starship was obliterated by a pair of TIE fighters.