Radioactive Hydra is a monster in AdventureQuest Worlds.


The Radioactive Hydra is the result of a normal Hydra swallowing a Plutonium core. The players had to slay the Radioactive Hydra in order to get the Plutonium core out of it so that Laken can use it for a portal to the World Soul's part of the Underworld.


  • Location: World Soul
  • Level: 50
  • HP: 75,266
  • MP: 100



  • Radioactive Hydra is a recolored version of Styx Hydra.
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