Name: Dolphin
Universe: Earth-1
Alter Ego: Unknown
Occupation: Professional Adventurer
Marital Status: Single
Group Affiliation: Forgotten Heroes
Base of Operations: The South Pacific
Known Relatives: None
Height: 5 ft. 4 in.
Weight: 107 lbs.
Hair Color: Platinum
Eye Color: Blue
First Appearance: Showcase #79

History:
When two U.S. Navy frogmen, C.P.O. Chris Landau and Seaman 1st Class Ben Harkey, investigated the sunken wreck of the vintage ship U.S.S. Arabesque, they discovered a beautiful young woman living within, obviously able to survive underwater without drowning. Brought aboard their own ship by Chris and Ben, the young woman was found to have gill-like slits in her neck and slight webbing between her fingers and toes, and Chris named her "Dolphin".

As the next few days passes, it was discovered that, although Dolphin had fully developed lungs, she had to return to the water briefly every five or six hours, or risk suffocation and death. Chris fell in love with Dolphin and was heartbroken when she ultimately returned to the sea.

Several more years passed until Dolphin was seen again, now as a member of a group gathered together by a mysterious being known only as the Immortal Man. As with the other heroes, Dolphin had accidentally stumbled across one of several ancient golden pyramids that were of supreme importance to the American government. When it was learned that these pyramids were part of a monstrous plot by the villainous Vandal Savage to conquer the world, Dolphin and the other Forgotten Heroes, with the aid of Superman himself, destroyed the pyramids and thwarted Savage's schemes.

When the Immortal Man suggested the Forgotten Heroes remain together as a permanent team, Dolphin agreed and continues as a member as of this writing, her origins still mysterious and unknown.

Powers:
An Olympic-level swimmer with no real knowledge of hand-to-hand combat, Dolphin is able to remain underwater indefinitely, survive the crushing pressures of the deep, and swim with a speed far outstripping that of the sleek undersea mammal for which she is named.

Whether Dolphin is the last survivor of some forgotten undersea race, the result of some forbidden experiment, an alien stranded on Earth, or something else entirely is unknown as of this writing and the subject of great speculation.