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Moonstone is the name of different characters appearing in American comic books published by Marvel Comics.

Editorial storyEdit

The Lloyd Bloch version of Moonstone first appeared in Captain America #169 (1974) and was created by Steve Englehart, Mike Friedrich and Sal Buscema.

The Karla Sofen version of Moonstone first appeared as a gun moll of the villain Dr. Faustus in Captain America (vol. 1) #192. She later appeared in issue #228 of The Incredible Hulk where it was revealed that she was the psychiatrist of the former Moonstone, Lloyd Bloch, and that she tricked him into relinquishing the moonstone to her. She was later revealed to be a member of the shadowy organization known as the Corporation.

Fictional character biographyEdit

Lloyd BlochEdit

Lloyd Bloch is an agent of the Secret Empire who uses Gravimetric powers derived from alien gem where he operated under the alias of Moonstone.[1] He later took on the name of Nefarius.[2]

Karla SofenEdit

Karla Sofen is a psychologist who learned about Lloyd Bloch's activities.[3] After tricking him into give her the alien gem, she took up the name of Moonstone.[4]


  1. ^ Captain America #169. Marvel Comics.
  2. ^ Captain America #379. Marvel Comics.
  3. ^ Captain America #192. Marvel Comics.
  4. ^ Captain America #228-233. Marvel Comics.