The character was originally created by writer Robert Bernstein and artist Ramona Fradon, serving as the sidekick and junior counterpart to superhero Aquaman alongside contemporary, Aquagirl.
The second incarnation of the character, Kaldur'ahm, originally was set to debut in 2010, created for the Young Justice animated television series by Brandon Vietti, Greg Weisman, and Phil Bourassa.
Several months before the series' premiere, an altered version of the character, Jackson Hyde, was brought into comic books by writer Geoff Johns and artist Ivan Reis.
[1] Years ago, King Thar and his wife Queen Berra became the reigning monarchs of Shayeris, the capital of a group of Idyllist colonies in the Hidden Valley.
Radical Idyllists deposed and murdered King Thar and banished his pregnant wife Queen Berra to Poseidonis, the capital city of Atlantis; there she gave birth to Garth, a child with purple eyes.