Teddy Altman may have based his identity after the Hulk, but he’s got nothing to do with Bruce Banner. Hulkling is a Kree/Skrull hybrid, possessing the powers of both races. His shapeshifting powers let him take a Hulk-like appearance, in addition to growing wings, claws, or whatever else he needs in a given moment. Like his boyfriend Wiccan, Hulkling was a frequent member of the Young Avengers.
Article source: https://www.cinemablend.com/news/2471891/8-marvel-characters-who-could-be-the-mcus-first-gay-hero