Maya is one of the playable characters in Borderlands 2. She is the Siren class of the game. Maya is able to Placelock enemies and stuns them at their current position. Maya’s gameplay is more active due to her action skill. While her Phaselock ability is pretty powerful, it, however, doesn’t last very long. The upside is that Maya’s action skill has a short cooldown, which lets you use it quite often. So if you like an action-packed solo experience Maya has an aggressive playstyle. When you like to play co-op then Maya is also a great buddy to have around as she has the ability to keep the team’s health up and revive others at a distance.
Phaselock: Maya’s skill gives her the ability to suspend foes in another dimension. This can lock an opponent in stasis and can be upgraded to provide various damaging effects. This skill is useful for crowd control in both co-op and single-player modes. Repeatedly Phaselocking the same enemy results in diminishing returns. Base Cooldown is 13 seconds, base Duration is 5 seconds.
As an infant, Maya was identified as a Siren and given to the Order of the Impending Storm, the ruling order of monks on her homeworld of Athenas. She trained her Siren powers in secret until she reached adulthood when the monks revealed her to the public as their goddess and savior. Irritated by the Order’s short leash, she longed for adventure and expressed interest in traveling to Pandora to learn more about her Siren lineage. She eventually realized that the Order was using her as a threat to extort money and obedience from the people of Athenas. After Phase locking and executing her handler Brother Sophis, she headed to Pandora to finally satisfy her curiosity about Sirens.
Maya already knew of the Vault and the presence of Eridium before arriving on Pandora. After Handsome Jack learned of Maya through Hyperion surveillance footage of Athenas, it presumably didn’t take much effort to get the Siren on the train at the beginning of the game.