Experiment X

Barry Windsor-Smith introduced Experiment X to Marvel readers in 1991's Marvel Comics Presents #73, and the character carries the unmistakable weight of that creator's meticulous, painterly storytelling. Emerging in the Copper Age alongside figures like Logan, Dr. Abraham Cornelius, and Shanna O'Hara Plunder, Experiment X inhabits a corner of Marvel's universe steeped in shadowy science and primal intensity. With only a handful of catalog appearances, this is a rare, collector-worthy presence — the kind of character whose scarcity makes each page all the more compelling for fans who love digging into the deeper, darker edges of Marvel history.