Graviton

Few villains arrive with the kind of gravitational pull — literal or otherwise — that Graviton brought when Jim Shooter, Sal Buscema, and Pablo Marcos unleashed him on the Marvel Universe in The Avengers #158 back in 1977. A Bronze Age heavyweight from the very start, this force-of-nature antagonist has been a persistent threat across nearly five decades, racking up appearances in The Avengers, West Coast Avengers, and Thunderbolts alike — the kind of rogues' gallery résumé that signals a villain Marvel keeps reaching for. With two key-issue appearances to his name and a publishing history stretching from the Bronze Age all the way to 2026, Graviton is the sort of character who rewards the deep-diving collector, sharing pages with titans like Iron Man, Captain America, and Clint Barton across 42 catalog appearances that prove his staying power in the Marvel cosmos.