In the 2007 "World War Hulk" storyline, Stark designs a new Hulkbuster armor in order to battle the Hulk, who goes on a rampage upon his return to Earth from space. He is initially able to hold his own against his foe. The new armor is built as a large exoskeletal shell which fits around his normal armor and is equipped with rocket-boosted gauntlets, capable of punching the Hulk back several miles. It is also equipped with adamantium-tipped injector needles, which Stark used in an attempt to suppress the Hulk's power with S.P.I.N. Tech nanites, though the nanites failed due to sabotage. With the damage done by the Hulk and the entire Stark Tower collapsing on the already damaged armor, it was unable to continue functioning. It briefly re-emerged as a host body for the demon Zom, who attempted to use it to access S.H.I.E.L.D. technology and destroy New York City by shifting it into the Negative Zone; Zom was defeated by the efforts of the self-styled "Renegades" (Amadeus Cho, Hercules, Angel, and Namora), and the armor was used by Amadeus Cho as a temporary support to shore up structural damage caused in the battle.