Hospital 555 was the contested birthplace of the first Deadly SpaceMan. The inhumane events that took place here lead directly to the current period where the universe is consumed with war, destruction, mayhem, and awesome. It was staffed by limbless ProtoFigs, who captured unsuspecting citizens and performed horrible genetic experiments on them.
Eventually these insane operations, carried out by the delusional and psychopathic protofigs, came to fruition, and the Minifig was born. The gene-splicing madness successfully gave this new fig arms, hands, and legs. Consumed with rage and bloodlust after having been submitted to experiments more gruesome than previously thought possible, the first minifig who survived broke free from his restraints, killed the ProtoFigs who gave him his new body, and he escaped into the world; a deadly killer genetically engineered for destruction. This first minifig was the Deadly Spaceman.
This is also how babies are made.