Spitfire

Jacqueline Falsworth, daughter of the original Union Jack, gained superhuman speed after a life-saving blood transfusion from the android Human Torch during World War II. She joined the Allied super-team the Invaders as the speedster Spitfire, fighting for Britain alongside Captain America and her father.

Few characters embody the sweep of Marvel history quite like Spitfire, who burst onto the scene in 1977's The Invaders #12, conjured by the legendary Roy Thomas and Frank Robbins during the Bronze Age. Born into the wartime world of The Invaders, she's kept extraordinary company from the very beginning — sharing pages with Captain America, Namor, Human Torch, and Union Jack — and that pedigree has only grown richer over the decades. With nearly fifty years of publication history stretching from 1977 all the way to 2026, three key collector issues to her name, and a prominent role in Captain Britain and MI13, she's a character who bridges Marvel's Golden Age mythology with its modern British superhero landscape. If you haven't explored her catalogue yet, those 78 appearances represent one of Marvel's most enduring and underappreciated legacies.