Tequila is a Corporal in the U.S. Colonial Marine Corp. She is part of the U.S.M.C.'s sent to BG386 in the Aliens v Predator 3 campaigns. She arrives with Rookie in a Dropship from the USS Marlow, they are separated to begin with but communicate over 'comms' and as a player progresses as Rookie, will meet up with Tequila again and she will accompany Rookie and assist in gameplay. During Rookie's levels Tequila is captured by Aliens and has to be rescued, during her capture she becomes ill and needs to be taken to the Research Lab and Medical where she is first operated on in a MedPod before power is disconnected by Weyland, this then requires she be put into stasis and stays there until the end of Rookie's campaigns on BG386.
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Along with the surviving crew members Tequila, Katya and Rookie make their way aboard Weyland's personnel craft the USS Fiuan after the Aliens v Predator 3 campaigns have finished, before finally boarding an UD4L Cheyenne fitted with stasis.