Iron Maiden - Antoinette "Toni" Stark a former S.H.I.E.L.D. agent and the sister of Tony Stark. Also the current owner of Stark Industries. Unlike her brother, Toni has made her identity public and opened defense contracts with the U.S. military. She is referred to as "ironbitch" by the Wasp in the first issue of the series when she is nearly clipped by Stark as she returns from an unrevealed location/mission (this was changed when the book was printed for children to "ironpest"). Revealed in the final issue of the first volume to share a loving bond with Bruce Banner. Ascends to another plane of existence at the conclusion with Bruce.
She also appears with a large mecha attachment to her suit which design is attributed to the RX-78GP03 Gundam Dendrobium from the anime Mobile Suit Gundam 0083: Stardust Memory.