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Philip Master, nicknamed Acid Master by Cisco Ramon, was a meta-human who was hunted by Cicada but ultimately placed in the Pipeline.


Philip Master attacked the chemistry department to take some acid which he seemed to be drinking, as he claimed to need it, (likely either as a means to fuel his powers, or as a form of nutrition) until the Flash and XS appeared and tried to stop him. After a short confrontation he manage to escape. That night he was being hunted by Cicada, but Killer Frost showed up, dressed like Philip to trick Cicada, while using an interdimensional extrapolator to send Philip away and lock him up in the pipeline.[1]

Powers and Abilities


  • Meta-human physiology: Through unknown means, Philip Master's DNA was altered by exposure to dark matter, allowing him to access his newfound powers.
    • Acid generation: Philip is capable of channeling acid from his hands. The acid that he produces is potent enough to instantly burn through a solid brick wall.[1]
      • Acid immunity: Philip can ingest corrosive acid without it harming his body.


  • Sodium bicarbonate: As noted by the Flash, sodium bicarbonate neutralizes any acid. However, this only stopped Philip for a second; his acid quickly burned through it and he escaped.
  • Power-dampening tech: Philip's powers cannot not work while he's imprisoned in the S.T.A.R. Labs particle accelerator.


The Flash

Season 5

Behind the scenes

  • In the comics, Acid Master is a chemist and saboteur who debuted in Action Comics #348 as an enemy of Superman.