Ava Starr (Ghost)

Ava Starr is the daughter of Elihas and Catherine Starr, and a founding member of the New Avengers. During her childhood, she gained the ability to render herself intangible and generate extreme amounts of power following a quantum accident which killed her parents. At a young age, S.H.I.E.L.D. began taking advantage of her powers, enlisting her as a stealth operative under the moniker of Ghost prior to Hydra's uprising. Under Bill Foster's care, Starr realized that she was slowly dying due to a lack of quantum energy, which she involuntarily harnessed. Within weeks of succumbing to her disease without a cure, Starr learned that a Quantum Tunnel had been created by Hank Pym and embedded into a portable lab. Her plans to absorb energy from the Quantum Realm conflicted with Pym's plans to rescue Janet van Dyne, whose survival in the Quantum Realm relied directly on the energy Starr sought to extract. Starr began making attempts to steal the lab by force, putting her in conflict with Ant-Man and Wasp. Upon her return, Janet transferred some of her quantum energy into Starr, stabilizing her affliction. With her pain healed, she went into hiding with Foster. On the run from fifteen nations, Starr found herself under the employment of Valentina Allegra de Fontaine, working as a shadow operative for O.X.E. When de Fontaine was faced with incoming impeachment, she sent Ghost and her other operatives to kill each other in an attempt to get rid of any incriminating evidence. Following a brief battle, where Ghost murdered Taskmaster, the group learned the truth and agreed to work together to escape. Ghost, now teamed with Yelena Belova, U.S. Agent, Red Guardian, and Winter Soldier, decided to take down de Fontaine and stop her plans to use Bob Reynolds as her own weapon. The team saved Manhattan from Void, and de Fontaine publicly declared them as the New Avengers.