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Promethium 90
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User

Injustice Syndicate

creator

Injustice Syndicate

Timeframe

21st century

First Appearance

Deep Cover for Batman!

History

Promethium 90 is a rare isotope of the element housed in a nuclear plant in Gotham City. With a low half-life, the isotope is kept in a special container. The isotope became the target of the Injustice Syndicate when it required a power source for its bomb.

Appearances

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