Ghost

Ava Starr was just a child when her parents died. Her father took too many risks after being kicked out of S.H.I.E.L.D. and discredited by Hank Pym, causing his quantum tunnel to explode. But while they were killed, Ava instead was changed to naturally use quantum energy, causing her to be able to phase through objects. She was discovered by Bill Foster, and was given stealth training by S.H.I.E.L.D., turning her into a superpowered operative under the false pretense that they would eventually cure her. However, her using quantum energy caused her to slowly die, requiring her to spend time either in her suit or a specially made chamber to help control her powers and (supposedly) reduce the pain, though it eventually got to the point where they barely helped anymore. As such, she changed her attention to Janet van Dyne, who had been trapped in the Quantum Realm for decades, planning to harvest quantum energy from her, killing Janet but saving Ava. She failed in this, but was still ultimately cured by Janet, freeing her of her powers.

Strength

• Kicks Scott Lang across a room (source) (Striking)
• Kicks Hope van Dyne out of the back doors of a van (source) (Striking)
• Slams Scott’s head against a window, cracking it, before kicking him through a drywall and into another, harder wall beyond hard enough to dent it (source) (Striking/Pushing)
• Knocks out Hope and Scott with a punch and kick, respectively, long enough to tie them and Hank Pym to chairs (source) (Striking)
• Kills an armed guard with what appears to be a punch (source) (Striking)
• Seemingly kills an unaware armed guard with a kick (source) (Striking)
• Pushes Hope into a column, hard enough to crack it slightly (source) (Pushing)
• Easily hauls around a shrunken down abandoned building hosting Hank Pym’s lab, and breaks through a vehicle’s window with it (source) (Lifting)

Durability

• Is staggered back by a punch from a shrunken Hope to the face, and recovers in time to phase through her next kick (source) (Blunt Force)
• Sent rolling across a room by a kick from a normal sized Scott (source) (Blunt Force)
• Is stunned from having a large Scott Lang punch her in the face hard enough to break her helmet (source) (Blunt Force)
• Is rammed into by a vehicle emerging from the Quantum Realm, sending her flying across the room and into some shelves. She is next seen staggering up a short while later (source) (Blunt Force)
• No-sells one of Janet’s energy blasts in her suit, which takes her down while out of it (source) (Energy)
• Her suit is visibly undamaged after one of Hope’s energy blasts skims it (source) (Energy)
• Is knocked off the back of a speeding pickup truck by a car ramming the back of it, sending her tumbling on the street (source) (Other)

Speed

• Phases through a catering trolley kicked at her (source) (Reaction)
• While jumping across a street, phases through a car speeding her way before rematerializing on the other side to kick a man off a motorbike, also riding down the street (source) (Reaction)
• Phases through a punch from behind (source) (Reaction)
• Phases to dodge a surprise lunge from Hope after she grows next to her (source) (Reaction)
• Appears to blitz forwards a short distance (source) (Movement)
• After appearing right in front of her, phases through Janet before she can react and blast her (source) (Movement)

Phasing

• As a kid, phases through things by default, and with minimal visible distortion (source)
• Phases through a catering trolley kicked at her (source)
• Phases through a number of bullets being fired at her before unphasing just to kill her attacker (source)
• Phases through a van’s windscreen (source)
• Moves through a set of closed doors (source)
• While jumping across a street, phases through a car speeding her way before rematerializing on the other side to kick a man off a motorbike, also riding down the street (source)
• Keeps her fist phased through Hank Pym’s throat as a threat so he gives her what she wants (source)
• Kills a man by phasing her hand into his chest (source)
• Remains in a room, invisible and unknown to its occupants, to eavesdrop on them (source)

Other

• While she can appear almost invisible while phasing, she’s seemingly easier to see through night vision lenses (source)