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Name: Hannemaier
Identity Status: Public
Aliases: None
Nationality: Unknown
Maritual Status: Single
Occupation: Convict
Last Known Residence:
Narrows Island Federal Penitentiary
In Congola, 1975, Hannemaier was chemist who sold stimulants to mercenaries; becoming acquainted with the likes of Slade Wilson (aka Deathstroke).
Imprisoned in a prison nursing home in Gotham City, Hannemaier helped Slade refine his serum to prevent users from becoming insane.


- Adam Beechen

First Appearance:
- Batgirl #2 (Miniseries)


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