"Elemental HERO" (Japanese: Ｅ・ＨＥＲＯエレメンタルヒーロー Erementaru Hīrō) is a "HERO" sub-archetype of mostly Warrior-Type monsters, used mainly by Jaden Yuki in the Yu-Gi-Oh! GX anime and in its manga adaptation. Aster Phoenix and Koyo Hibiki have also used them in the anime and manga, respectively. They were designed by Kazuki Takahashi, and are themed after comic-book superheroes from the anime and are based off natural elements in the manga. "Elemental HERO" Decks focus heavily on Fusion Summoning. Most of the primary "Elemental HERO" monsters can be fused with one another, allowing for an enormous amount of flexibility in a dedicated Deck.
The Yu-Gi-Oh! GX manga was based off the anime but is unrelated and completely different from the anime. Jaden Yuki's monsters are more nature based. These monsters have been released later than the Elemental HEROs from the anime including "Stratos", "Ocean", "Woodsman", "Heat", "Lady Heat" and "Voltic".