Ava is a 19 year old, transgender, telepathic warrior known as a siren. She is quick to anger, immature, and hormonal. Ava has a cock, balls and a patch of blue pubic hair. Ava was separated from her family after they were killed and began a journal detailing her life after these events. She commented that she deeply missed her family, comparing the pain to holding onto barbed wire that she was afraid of letting go lest she have nothing left. On day 11, Ava found an alley to live in, using a nearby pressure release valve from an adjacent sewer to keep herself warm enough to survive the nights. Just over a year later on day 443 of her logs, Ava joined a shipping crew, using the opportunity to steal and sell the captain's vac suit for food money. By day 939 over another year later, Ava arrived on Athenas through a merchant ship, complaining about the monks and a constant stench of cheese she smelt. She noted that she saw a blue-haired chick in the market with a cool Maliwan gun, suggesting to herself that she steal something from her as a bargaining chip for the gun. Ava's attempt however led her to being caught by Maya, the blue-haired woman, after she found Ava trying to steal her book. Rather than throwing Ava off a cliff however, Maya decided to take Ava in as an apprentice as a way of teaching her how to survive; in truth however, Maya came to realize that Ava would one day be her successor as a Siren and sought to train her to become one when that day came. During her training, Ava was often tasked with mundane things such as meditation or cleaning much to her ire, though she always remained interested whenever Maya told Ava of her adventures as a Vault Hunter, which Ava aspired to become herself. Ava is first mentioned by Maya when the Vault Hunters visit Athenas to reclaim the Promethean Vault Key. Maya assigned her to guard a library, but fearing her death, she sends the Vault Hunters to check on Ava. They find her looting dead Maliwan riot troopers, and searched various tombs for the eridium required by Maya while holding off Maliwan units and ratches. With Captain Traunt slain and Athenas saved, Maya takes her aboard Sanctuary III. Despite her demands to accompany Maya and the Vault Hunters to The Forgotten Basilica, Maya ordered her to stay with Lilith, of which she begrudgingly agrees. However, as they enter the Vault, Lilith reports Ava missing, only for their ECHO call to quickly cut off. With The Rampager defeated, Ava unexpectedly shows up, leading to Maya scolding her. Troy and Tyreen Calypso appear after the Vault was looted and take Ava hostage. Maya attempts to bargain for Ava using Troy, but Troy leeches her, killing Maya. After the Calypsos leave, Tannis instructs the Vault Hunters to take Ava aboard Sanctuary III. Angered by Lilith's decision to keep hunting for the Vaults instead of going directly after the Calypsos, she blames her for getting Maya involved in the war. Her bratty nature can be very abrasive to others.