Buddy Blank initially served as a bumbling and clumsy janitor within the headquarters of the Global Peace Agency. However, when the need came, he was unknowingly transformed into the One Man Army Corps by Brother Eye.

During a team mission with Batman to stop the Russian war criminal, Doctor Kafka, things went bad when the Doctor was exposed to an organic metal in his lab, resulting in him becoming a powerful metal being and taking on a new name for himself, Shrapnel.

Following the failed mission, Batman described OMAC as a "loose cannon". The very same process that turned mild-mannered Buddy into OMAC stripped him of his memories and emotions, leaving the supersoldier without his human side's drive to help innocent people, creating a war machine that did not care who or what got in the way of its mission.




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