Circe

Sersi is one of Marvel's Eternals — an offshoot of humanity secretly uplifted by the cosmic Celestials millions of years ago. Gifted with immortality and extraordinary power, she stands apart even among Eternals for her unmatched ability to transmute matter at the molecular level.

Jack Kirby introduced Circe to Marvel's cosmic tapestry in The Eternals #2 in 1976, and this Bronze Age creation has proven remarkably enduring — racking up 132 catalog appearances across a span that stretches all the way to 2026. Circe's journey through the Marvel Universe has taken them deep into the world of Earth's Mightiest Heroes, with The Avengers and Captain America series forming the backbone of their publishing history and the likes of Captain America, Thor, and Iron Man sharing the page along the way. With 11 key-issue appearances to their name, this is a character collectors have clearly taken notice of — a Kirby original whose longevity alone speaks to a staying power that few Bronze Age debuts can match.