In Marvel Comics, Captain America’s super-soldier serum turned him into a hero that many aspire to be, but in the Ultimate Comics Universe, a secret replacement for Steve Rogers reveals a deadly truth about a special serum that doesn’t always work the way it’s supposed to.
Revealed in 2005’s The Ultimates 2 Annual #1, by Mark Millar and Steve Dillon, this issue deals with a central idea of Captain America lore: his super-soldier serum. Following Nick Fury and a handful of costume-powered volunteers, this story also introduces a man named Lieberman that acts as a secret replacement for Cap should he ever die in battle or turn evil.
Related: Marvel Proves There Should Always Be Two Captain Americas
Bringing Lieberman in front of a replica of Cap’s costume and telling him he’s next in line if need be, it’s relayed to readers that Lieberman is the “first test subject in over fifty years whose body didn’t reject the super-soldier serum” — an impressive feat on its own, to say the least. Eventually sent out into the field to save civilians from a burning building, Lieberman is able to embody Captain America in a way that no one expected while also revealing the darkest part of this new serum and an even darker secret Nick Fury has kept to himself.
Rescuing over fifty people before collapsing and dying on the spot, Nick Fury is informed that Lieberman had a “complete collapse of his central nervous system” and that the super-solder serum also “put his brain into shutdown” in the process. Going on to reveal that this isn’t the first time Fury has lost a volunteer trying to replicate Steve Rogers’ success, and the unfortunate truth about this deadly serum and its constant failures is brought to light.
A concoction that many
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