Hannah John-Kamen known as Ava Star aka Ghost in her previous role on Ant-Man and the Wasp in 2018. Hannah teased her comeback by vaguely speaking on the contract process that comes with the MCU saying
In the MCU, you have to sign your contract with blood and they stitch your mouth together. All I can say is that Ghost didn’t die.
The confidentiality oath of the Marvel Cinematic Universe only allows few details. She slides a taste of the pie by assuring Yahoo Movies UK, her character didnt die-suggesting we may see the Ava Starr character is later films. Now we wonder, where and when? As Ant man and the Wasp 2/Ant man 3 wasnt mentioned in MCU phase 4 line up.
The last time we saw Ava Starr in The Ant and the Wasp she on the verge of death and was saved at the last minute thanks to the recently rescued Janet Van Dyne. The original Wasp used some of her quantum energy to help stabilize Ava, who then went into hiding with Laurence Fishburne’s Bill Foster.
Possibilites for the pop up return of Ava Starr are flexible in the MCU. Recently, many of the MCU’s actors are lending their voices to the Disney+ series What… If? The actors are reprising their roles for the 23 episodes of each film The Infinity Saga. With that coming, there surety of episodes where Ant-Man and the Wasp is will be presented with scences that change the plots fate. Hannah John Kamen’s Ghost could should show up in that or have her own spotlight since crossing roads with Black Widow.
We’ll have to wait and see!