Zer0 is the playable Assassin class character in Borderlands 2. He is an extremely mysterious assassin who came to Pandora to find a challenge worthy of his skills. His skill is Deception, which creates a holographic decoy while he turns invisible, allowing him to strike suddenly for massive damage.
Background[]
Zer0 is an assassin for hire. According to his wanted poster and his personal ECHO recordings, he performs both political assassinations and common hits. Following a particularly unsatisfying assassination where the target fails to fight back, despite being encouraged by Zer0 to do so, the assassin starts to look for a more challenging environment. He travels to Pandora after hearing of the Vault from a bartender, deeming the hunt as worthy of his skills.
As his face and body are completely covered by his suit, a certain amount of mystery surrounds Zer0's true appearance. In an ECHO recording, Angel remarks that she's not even sure if Zer0 is human; both in-game and promotional material show that he has only four digits on each hand. His origins and real name are also unknown, leaving the character shrouded in mystery.
As revealed in the "Ask Dr. Tannis" Section of the Pandoran Gazette, included as a scrap of paper in the Diamond Plate Loot chest, Zer0 is not his true name. The remaining piece of scrap containing the name and gender of Zer0 were not included, but the part that does remain suggests that Patricia Tannis is aware of Zer0's origins.
Borderlands 3[]
After the events of the second game, Zer0 has entered the employment of Atlas Corporation, now ran by Rhys Strongfork. He serves as Rhys right hand man and assists the Vault Hunters throughout their stay on Promethea.