Ava Starr.

Her powers were very unusual, so unusual that she was recruited by S.H.I.E.L.D. and trained as a spy so that she could carry out missions to eliminate threats that were too difficult for regular operatives. They created the Ghost Suit for her as a means of using her powers, giving her the ability to slip between intangible or solid states. Throughout her time at S.H.I.E.L.D. and all of her training, Ava became violent and extremely vicious, eventually leaving S.H.I.E.L.D. when she realized she had been deceived.

As a child, Ava witnessed her father Elias Starr being fired by scientist Hank Pym, wiping his name out of the scientific community. Then Elias decided to study the quantum dimension on his own, despite the enormous risks. The experiment failed, Ava ran to her father so that he would not die alone, but the tunnel ruptured earlier. Her mother Katherine Starr and father exploded, but Ava managed to survive, having received phasing. After the fire brigade arrived, one of the firemen tried to touch her, but Ava's phasing worked. She was sent to an orphanage and there she first met Bill Foster, who gave her a toy. Ava wanted to take it, but because of the phasing she could not, Bill told her to concentrate her powers, and in the end she was able to touch and take the toy. Bill promised to find a way to cure this defect and he made his quantum tunnel to find a cure and cure his adopted daughter.