Tempest is a name used by several different and unrelated characters in the DC Universe. It was originally used by Joshua Clay, a Vietnam War veteran with mutant powers who became a member of the Doom Patrol's second incarnation. Clay was later shot and killed by Niles Caulder after retiring. Garth began using the name after he outgrew his position as Aquaman's sidekick Aqualad under Atlan's mentorship, and continued to use it during his membership in the Titans. In the Atari Force universe, the alias is used by a hero named Christopher Champion.