Ghost

Ava Starr

Played by Hannah John-Kamen

Ava Starr survived a lab accident as a child that killed her parents and left her with a molecular disequilibrium, causing her body and mind to phase uncontrollably unless stabilized by a specialized suit. Operating as Ghost, that same condition grants her the ability to phase through solid matter, and she spent years seeking a cure through means both scientific and, eventually, Quantum Realm-based. Read more →

First turns up in Ant-Man and the Wasp.