10 Ancient Warriors

Being mentioned multiple times in Digimon Frontier, the Ancient Warriors are the legendnary predecessors of the 10 Legendary Warriors. Each one of them wields 1 of the 10 elements found in the digital world.

Members

 * AncientGreymon of Fire
 * AncientGarurumon of Light
 * AncientKazemon of Wind
 * AncientMegatheriumon of Ice
 * AncientBeetlemon of Thunder
 * AncientSphinxmon of Darkness
 * AncientWisemon of Steel
 * AncientMermaimon of Water
 * AncientTroiamon of Wood
 * AncientVolcamon of Earth

Digimon Frontier
In times long ago, there was a war between the human and the beast digimons. Then, at one time, an angel digimon named Lucemon and quelled the two factions. However Lucemon soon became corrupted and ruled with tyranny over the Digital World. It was during this time that the 10 Ancient Warriors appeared. They fought against Lucemon and sealed him in the Dark Area, thus freeing the Digital World from his rule. As a result, they lost their lives. But before they completely disappeared, they used their own data to create the Spirits that would be used by the ten Legendary Warriors. The Spirits were then given to the three Great Angels: Seraphimon had the spirits of Wind, and Light, Ophanimon had the spirits of Flame, Ice, and Thunder and Cherubimon had the spirits of Earth, Wood, Water, Steel, and Darkness.

Island of the Lost Digimon
In the 7th Digimon movie Island of Lost Digimon, it is said that AncientGreymon and AncientGarurumon once fought against an evil Digimon named Ornithmon and sealed it on a traveling island. When  Murmuxmon awakened [Ornithmon again, with the help of Bearmon and Kotemon, the two ancient Warriors reappeared and destroyed Ornithmon, this time for good.