DC Database

Con man Dan Rivers operated under the alias Swami Riva in Metropolis in the 1940s. He was the first criminal to use Kryptonite against Superman, although at the time he was unaware of what he was actually doing.[1]



Green Kryptonite

  • This version of Swami Riva, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths event and later restored following the rebirth of the infinite Multiverse during the Dark Crisis of 2022-2023. Even though other versions of the character may have appeared, this information does not apply to those versions.
  • The Kryptonite seen in Superman #61 was colored red, but affected Superman like Green Kryptonite. Reprints[2][3] and flashbacks[4] have re-colored the Kryptonite green.

Superman #61; Superman Family #202; Superman Family #205



Superman Villain(s)
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This character has been primarily an enemy of Superman in any of his various incarnations, or members of the Superman Family. This template will categorize articles that include it into the "Superman Villains category."