Mobile Suit Gundam
Lt. Simus Al Bakharov is a Principality of Zeon officer working on the experimental mobile armor MAN-03 Braw Bro. She is encountered testing it near Side 6 and escapes although the Braw Bro takes heavy damage. She is later sent along with Challia Bull to assist Char Aznable, and pilots the Braw Bro alongside him. While on a sortie, the pair encounter Amuro Ray in the RX-78-2 Gundam and are killed in the ensuing fight.
Mobile Suit Gundam: The Origin
In The Origin, Simus doesn't pilot the Braw Bro alongside Challia Bull, so she lives long enough to participate in the Battle of A Baoa Qu, alongside a squadron of Braw Bros. After shooting down many GMs, Simus eventually encounters Sayla Mass piloting a customized GM. After a furious close quarters battle in which both units take damage, Sayla shoots the Braw Bro's cockpit at point blank with her beam rifle, killing Simus.