Legendary Warriors

Those who use the Human & Beast Spirits left by the 10 Ancient Warriors when they died after sealing away Lucemon. The Spirits were then divided between each of the three Great Angels. Seraphimon had the spirits of Wind, and Light, Ophanimon had the spirits of Fire, Ice, and Thunder and Cherubimon had the spirits of Earth, Wood, Water, Steel, and Darkness. But after Lucemon corrupted Cherubimon, Seraphimon was injured from one of Cherubimons attacks, so Ophanimon hid both of their Legendary Warriors spirits from Cherubimon by scattering them throughout the Digital World. Cherubimon created four evil Legendary warriors from the Earth, Wood, Water, and Steel spirits to collect the data from the Digital World, which was actually to be used towards reviving Lucemon. Ophanimon then drew in many children from the Human World in order to determine who would be worthy to attain the spirits that she hid. Cherubimon learned of this and drew in the spirit of a human named Kouichi Kimura after he fell unconscious when Kouichi failed to get on the train that had his long-lost brother Kouji and the other children were on. Cherubimon then corrupted the spirits of Darkness to give to Kouichi and he became, Duskmon, the fifth evil Legendary Warrior. This lasted until Kouji was able to free him and shortly afterwards the Spirts of Darkness regained their true form.

Spirits
Each of the spirits of listed by the Human Spirit first followed by the Beast Spirit and Japanese names go first followed by English Dubbed Names:
 * Spirits of Fire, Agnimon/Agunimon and Vritramon/Burning Greymon
 * Spirits of Light, Wolfmon/Lobomon and Garmmon/Kendo Garurumon
 * Spirits of Wind, Fairymon/Kazemon and Shutumon/Zephyrmon
 * Spirits of Ice, Chakmon/Kumamon and Blizzarmon/Korikkakumon
 * Spirits of Thunder, Blitzmon/Beetlemon and Bolgmon/MetalKabuterimon
 * Spirits of Darkness, Lowemon and Kaiser Leomon/JagerLowemon
 * Corrupted Spirits of Darkness, Duskmon and Velgmon
 * Spirits of Steel, Mercurymon and Sefirotmon/Sakakkumon
 * Spirits of Water, Ranamon and Calmaramon
 * Spirits of Wood, Arbormon and Petaldramon
 * Spirits of Earth, Grottomon/Grumblemon and Gigasmon

Also other then their Human and Beast Spirits forms, Seraphimon's power gave Takuya Kanbaru and Kouji Minamoto the ability to bring their Human and Beast Spirits together. Takuya can become Ardhamon (Aldamon) and Kouji can become Beowulfmon. Shortly after that Takuya and Kouji's D-Tectors were upgraded by the last of Ophanimon's power where they gained the ability to individually combine the Human and Beast Spirits from five from ten of the different spirits types. Takuya uses his spirits of Fire, along with the Spirits of Wind, Ice, Earth, & Wood to become Kaiser Greymon (Emperor Greymon). Kouji uses his Spirits of Light, along with the Spirits of Thunder, Darkness, Water, & Steel to become Magna Garurumon. At the end of the Frontier series all the spirits come together to create Susanoomon.