Professor Reinstein

Professor Reinstein is the scientist responsible for administering the Super-Soldier Serum to Steve Rogers, transforming the frail young man into Captain America. His expertise and sacrifice at that pivotal moment made him the direct architect of Marvel's most iconic hero.

Few characters can claim to have been present at the very birth of a legend — and Professor Reinstein is one of them. Debuting in the landmark Captain America Comics #1 in 1941, this Golden Age Marvel figure was there from the very first page of one of comics history's most iconic runs, brought to life by the incomparable team of Joe Simon and Jack Kirby. His handful of appearances across eight decades — from that thunderous 1941 debut through anniversary tributes and special editions — speak to just how indelible his place in the mythology is, sharing those storied pages with Steve Rogers, Captain America, Bucky, and even the Red Skull himself. If you're a serious student of Marvel's Golden Age origins, Professor Reinstein is a name worth knowing.