Is the identity of Alias ever revealed in the game?

In one of the cutscenes near the end of the game (episode 20 or 19), Kat had a vision that implied she recognized the identify of Alias when he removed his mask in the vision. However, now that I've beaten the game, I still have not found any references to that.

Was the identity of Alias ever revealed to the player?

Solution 1:

While not revealed in the original Gravity Rush, the identity of Alias is confirmed in the sequel, Gravity Rush 2, to be

Syd.

From the wiki:

it is revealed that his true identity is none other than Syd, a former attendant of Kat's during her time as Queen Alua in the pillar-top kingdom of Eto. He possesses a communications device made from Nevi crystal, the source of his ability to control the Nevi.