Harpy

Few characters can claim a debut in one of Marvel's landmark anniversary issues, but Harpy made exactly that entrance — bursting onto the scene in The Incredible Hulk #200 in 1976, a Bronze Age milestone that collectors still prize today. Born from the creative team of Len Wein, Sal Buscema, and Joe Staton, this striking figure has orbited the green-skinned chaos of the Hulk's world for nearly five decades, sharing pages with titans like Bruce Banner, Betty Ross, Rick Jones, and even Captain America. Though appearances across Incredible Hulk, Immortal Hulk, and Fantastic Force are selective rather than sprawling, that relative rarity only sharpens the intrigue — a character with deep Bronze Age roots who has endured into the modern era is always worth a second look. If you're building a serious Hulk-universe collection, Harpy is one of those figures whose history rewards the curious fan willing to dig in.