CC-5576-39/Legends

"Impressive. Gregor, your designation is CC-5576-39. You were a captain and part of an elite squad, a clone commando. The file says you were reported missing in action during the Battle of Sarrish."

- Colonel Gascon

CC-5576-39, known as "Gregor," was a clone commando and captain who served in the Grand Army of the Republic.

Biography
Bred from the Mandalorian bounty hunter Jango Fett on Kamino, Gregor initially served the Galactic Republic and had participated in the Battle of Sarrish. Sometime during the battle, Gregor was reported missing in action and for unknown reasons had ended up on the remote world Abafar after losing his memory, where he was given a new life as a dishwasher in Borkus's diner Power Sliders, living in a little apartment rented from Borkus. He was later recruited by the Republic's D-Squad, which had been stranded on Abafar. He helped the droids get to a shuttle so they could fly to a Republic Cruiser in orbit. It was believed he died saving Meebur Gascon and M5-BZ during the skirmish, although Gascon held hope that he had survived.

Behind the scenes
Gregor made his first appearance in "Missing in Action," an episode in the fifth season of the Star Wars: The Clone Wars television series. The preview clip that Gregor appears in was shown at Celebration VI. He is voiced by Dee Bradley Baker. In a Season 5 trailer of the Clone Wars, the Aurebesh that displays on Gregor's profile notes that he went missing in action during the Battle of Sarrish.

Gregor's helmet markings are based on the hash-marks that Boston Bruins goaltender Gerry Cheevers stenciled on his mask to denote the stitches he would have gotten had he not been wearing protective gear.