ST-97 "Steel" was a Battle droid model used by the Twin Suns of Tatooine during the Cold War. In 3643 BBY the droid was guarding a mine in the Jundland, which was taken over by the pirates, where it was destroyed by a Galactic Republic individual sent by Jundo Martik to reclaim the mine. 
Behind the scenesEdit
ST-97 "Steel" appears in Star Wars: The Old Republic during the heroic mission "Reap the Whirlwind" on Tatooine.
- Star Wars: The Old Republic (First appearance)