Isbisa

Isbisa is a Golden Age-rooted Marvel villain whose wartime origins connect to the All-Winners Squad era. A scheming adversary with ties to Marvel's World War II heritage, Isbisa clashed with heroes including Captain America in stories bridging the Golden Age and later Marvel continuity.

A Bronze Age creation with Golden Age roots, Isbisa made their Marvel debut in The Avengers Annual #6 (1976), brought to life by the legendary team of Gerry Conway and George Pérez. With appearances stretching across 36 years and a catalog that includes Captain America and Bucky: Old Wounds and the Marvel Masterworks: Golden Age All-Winners Comics, this is a character whose story reaches deep into Marvel's wartime heritage. Isbisa shares the page with icons like Captain America, Miss America, and Madeline Joyce — rarefied company that speaks to the character's place in Marvel's grand historical tapestry. A rare find with a small but meaningful footprint, Isbisa is exactly the kind of discovery that makes digging through back issues so rewarding.