During the Brightest Day crossover event, Phosphorus is freed from Arkham when Deathstroke and the Titans attack the facility.
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In The New 52 (a reboot of the DC Comics universe) as part of the Forever Evil storyline, Doctor Phosphorus is among the villains that the Crime Syndicate of America recruited to join the Secret Society of Super Villains.
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He is shown incarcerated in Blackgate Penitentiary when Doctor Phosphorus makes an attempt on his life, one that Batman prevents.