Sergei Kravinoff

Emerging in the Bronze Age pages of Marvel #10 (1971) — brought to life by the legendary duo of Stan Lee and Jack Kirby — Sergei Kravinoff has proven himself a remarkably enduring presence in comics, with a publishing history stretching across more than five decades to the present day. With five key collector issues to his name, this is a character whose appearances carry real weight on the shelf. His world is populated by some of Marvel's most iconic figures: Spider-Man, J. Jonah Jameson, May Parker, Flash Thompson, and Otto Octavius all share his pages, placing him squarely at the heart of some memorable storytelling. Spanning Strange, Ultimate Spider-Man, and Titans among his most frequent appearances, Sergei Kravinoff is the kind of deep-catalog character that rewards the dedicated hunter — fifty-one appearances and still going strong.