S-13 Graverobber is green & grey sparrow, a possible drop from defeating Crota in Crota's End (Hard Mode).
The Graverobber works just like the Raid sparrow from Vault of Glass, the XV0 Timebreaker. It features Overdrive to boost to dangerously-high speeds, and Strafe Thrusters for sharp lateral movements.
- XV0 Timebreaker - Defeating Atheon in Vault of Glass
- S13 Graverobber - Defeating Crota in Crota's End (Hard Mode)