Sister Agony

A sinister figure born from the darker corners of Marvel's Bronze Age, Sister Agony made her debut in Captain America #296 in 1984, brought to life by the acclaimed team of J. M. DeMatteis and Paul Neary. She haunts the pages of one of Marvel's most iconic titles, keeping dangerous company alongside the likes of Mother Superior, Sister Death, and Sinthea Shmidt — a rogues' gallery that signals she runs in truly menacing circles. Her appearances are few and carefully placed, including one collector-recognized key issue, making her a rare and intriguing find for fans who love to dig into the rich, shadowy corners of Cap's world. If you're hunting the deep cuts of Captain America history, Sister Agony is exactly the kind of discovery that makes longbox diving so rewarding.