Fen

Origin
Princess Fen had previously had an affair with an surface-dweller and given birth to a human/Atlantean hybrid, whom she named Namor. When Namor ran afoul of some surface-dwellers, killing them and taking their bodies to Atlantis, his mother commended him for his deed and told him to deliver the bodies to their own kind so they could see the beginning of Atlantis' revenge against the humans.

Public Domain Appearances

 * Motion Picture Funnies Weekly #1
 * Marvel Comics #1