Ten Legendary Warriors

The Ten Legendary Warriors (十闘士) are a group of ten Mega-level Ancient Digimon that existed only in the distant past and represent the ten elemental attributes. The group fought to save the ancient Digital World from Lucemon, and in their past crusade against it, only AncientGreymon and AncientGarurumon survived to the end to seal the angel away. Each of them passed on their abilities to various types of Digimon, and left their powers to the Celestial Digimon in the form of the Spirits.

Digimon Frontier
The Ten Legendary Warriors lived and died long before the DigiDestined came to the Digital World. In the farflung past, Human and Beast Digimon began a war against each other, but the war was ended when the angelic descended to the Digital World to bring peace and order. However, his power corrupted him, transforming him from a benevolent and loving ruler into a tyrannical despot. In response, the Ten Legendary Warriors appeared, fighting Lucemon and managing to seal him away within the Dark Area.

At some point, AncientGreymon and AncientGarurumon also fought against the evil, and managed to seal it away on the Lost Island.

The war eventually took each of the Warriors' lives, but they managed to pass on their powers in the form of the Spirits, which they left to the Celestial Digimon—the Spirits of Wind and Light were given to, Fire, Ice, and Thunder to , and Earth, Wood, Water, Steel and Darkness to.

During the DigiDestined's battles against the corrupted Cherubimon's forces, they were swept up by the Lost Island, where they discovered that had been keeping the war between Human and Beast Digimon running in order to reawaken Ornismon. With the help of and, the DigiDestined managed to temporarily revive AncientGreymon and AncientGarurumon, who quickly slayed the monstrous bird.

The souls of the Legendary Warriors lay dormant within the Spirits, existing as silent partners to the DigiDestined, but they eventually reveal themselves during the final battle with Lucemon. Having taken on the personalities of the children who wielded their power, the Warriors encourage the DigiDestined, giving them the morale boost they need to evolve into, then eventually dealing the final blow to while in the form of their Human Spirits. Afterward, they bid farewell and vow to watch over the Digital World in the place of the DigiDestined.

AncientGreymon
AncientGreymon lives on in Takuya Kanbara, who wields the Spirits of Flame he created. His consciousness takes the form of Agunimon in the finale.

In addition to fighting Lucemon, he and AncientGarurumon also fought and sealed the evil Digimon Onismon in the movie Island of Lost Digimon. He and AncientGarurumon were the last ones standing in the final battle against Lucemon. He revives one last time to help deliver decisive blows against Onismon with his flames.

In Digimon Battle Spirit 2, Takuya Kanbara can become AncientGreymon as a finishing move. AncientGreymon emerges from the flames to burn everything in flames.

In the Japanese release of D-Tector 1.0, AncientGreymon can be obtained by scanning the barcode "0000000750111". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Agunimon, BurningGreymon, and Greymon's barcodes.

AncientGarurumon
AncientGarurumon lives on in Koji Minamoto, who wields the Spirits of Light he created. His consciousness takes the form of Lobomon in the finale.

In addition to fighting Lucemon, he and AncientGreymon also fought and sealed the evil Digimon Onismon in the movie Island of Lost Digimon. He and AncientGreymon were the last ones standing in the final battle against Lucemon. He revives one last time to help deliver decisive blows against Onismon with swords.

In Digimon Battle Spirit 2, Koji Minamoto can become AncientGarurumon as a finishing move. AncientGarurumon appears in a flash of light to bring his swords down on his foe.

In the Japanese release of D-Tector 2.0, AncientGarurumon can be obtained by scanning the barcode "0000000750211". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Lobomon, KendoGarurumon, and Garurumon's barcodes.

AncientBeetlemon
AncientBeetlemon now lives on in J.P. Shibayama, who wields the Spirits of Thunder he created. His consciousness takes the form of Beetlemon in the finale.

In Digimon Battle Spirit 2, J.P. Shibayama can become AncientBeetlemon as a finishing move. AncientBeetlemon appears in a flash of lightning and uses Tera Blaster.

In the Japanese release of D-Tector 2.0, AncientBeetlemon can be obtained by scanning the barcode "0000000760211". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Beetlemon, MetalKabuterimon, and Kabuterimon's barcodes.

AncientKazemon
AncientKazemon now lives on in Zoe Orimoto, who wields the Spirits of Wind she created. Her consciousness takes the form of Kazemon in the finale.

In Digimon Battle Spirit 2, Zoe Orimoto can become AncientKazemon as a finishing move. AncientKazemon appears in a burst of wind and uses Rainbow Symphony.

In the Japanese release of D-Tector 1.0, AncientKazemon can be obtained by scanning the barcode "0000000760111". In D-Tector 3.0, she is instead obtained by performing a Jogress Scan of Kazemon, Zephyrmon, and Silphymon's barcodes.

AncientMegatheriummon
AncientMegatheriummon now lives on in Tommy Himi, who wields the Spirits of Ice he created. His consciousness takes the form of Kumamon in the finale.

In Digimon Battle Spirit 2, Tommy Himi can become AncientMegatheriumon as a finishing move. AncientMegatheriummon emerges from the ice to use Great Snowplow.

In the Japanese release of D-Tector 1.0, AncientMegatheriummon can be obtained by scanning the barcode "0000000770111". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Kumamon, Korikakumon, and Zudomon's barcodes.

AncientWisetmon
AncientWisetmon now lives on in Mercurymon, who is the incarnation of the Spirits of Steel he created. His consciousness eventually takes that form as well.

In the Japanese release of D-Tector 2.0, AncientWisetmon can be obtained by scanning the barcode "0000000790211". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan.

AncientVolcamon
AncientVolcamon now lives on in Grumblemon, who is the incarnation of the Spirits of Earth he created. His consciousness eventually takes that form as well.

In the Japanese release of D-Tector 1.0, AncientVolcamon can be obtained by scanning the barcode "0000000780111". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Volcamon's barcode.

AncientTroiamon
AncientTroiamon now lives on in Arbormon, who is the incarnation of the Spirits of Wood he created. His consciousness eventually takes that form as well.

In the Japanese release of D-Tector 1.0, AncientTroiamon can be obtained by scanning the barcode "0000000790111". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Puppetmon's barcode.

AncientMermaimon
AncientMermaimon now lives on in Ranamon, who is the incarnation of the Spirits of Water she created. Her consciousness eventually takes that form as well.

In the Japanese release of D-Tector 2.0, AncientMermaimon can be obtained by scanning the barcode. In D-Tector 3.0, she is instead obtained by performing a Jogress Scan of MarineAngemon's barcode.

AncientSphinxmon
AncientSphinxmon now lives on in Koichi Kimura, who wields the Spirits of Darkness he created. His consciousness eventually takes the form of Loweemon in the finale.

In Digimon Battle Spirit 2, Koichi can become AncientSphinxmon as a finishing move. AncientSphinxmon emerges from the darkness to launch a giant blast of darkness.

In the Japanese release of D-Tector 2.0, AncientSphinxmon can be obtained by scanning the barcode "0000000770211". In D-Tector 3.0, he is instead obtained by performing a Jogress Scan of Loweemon, JagerLoweemon, and Pharaohmon's barcodes.