List of characters in Digital Monster X-Evolution

Leomon
Leomon is a Digimon who fights Dorumon in the old Digital World but relents, explaining that the X-Antibody won't save him even if he gains it. Leomon requests Dorumon to live in his place, in the new Digital World Yggdrasil created for the Digimon's future. Then he dies, saying how sorry he is for chasing him.

Mushroomon
Dorumon encountered some Mushroomon who bullied him since they believed that he was the cause of the instability of the Digital World. They attacked Dorumon and caused him to fall into a river.

Many other Mushroomon were a part of Silphymon's rebel group. Wizardmon instructed some Mushroomon to take care of Dorugamon when the rebel base was under siege by some DexDoruGreymon but most of them were killed by the rampaging Digimon.

Tokomon/Tokomon X
A Tokomon is a part of the X-Digimon/Royal Knights war. Originally taken care of by Blossomon, the Tokomon is rescued by WarGreymon X, who, while fleeing from Omnimon, gives it to Dorumon. The two quickly become friends, and when Omnimon attacks Dorumon, Tokomon steps in to help but is killed. MetalGarurumon X gives its X-Antibody to Tokomon, which resurrects him as Tokomon X.

He is later held captive by Magnamon to capture Dorugamon, but was freed by Dorugamon. After this, he finds WarGreymon X and tells of Dorugamon's capture.

He and WarGreymon X later race to the stronghold where Dorugamon is being taken care of. However, the base is soon attacked by the legion of DexDoruGreymon (who were born from DexDorugoramon, created by Yggdrasil from Dorugamon's data) under the command of Yggdrasil. WarGreymon has Tokomon X stay on the sidelines where he witnesses the most part of the fight between the first Legion of DexDoruGreymon and the X-Digimon and their allies. When he spots Dorugamon, he calls out to him. This causes him to nearly become a casualty of the DexDoruGreymon, but he is narrowly saved by MetalGarurumon for the second time. He makes his way down to Dorugamon and wakes him up. Tokomon X witnesses Dorugamon's digivolution to DoruGreymon, and despite initially fearing him, he is the first Digimon to warm up to DoruGreymon when he sees that despite his appearance, he is still his loving, caring and protective friend. However when the second wave of DexDoruGreymon arrive, Tokomon X is evacuated from the scene by WarGreymon X, who, along with MetalGarurumon X, Silphymon, Mummymon and Wizardmon help the remaining survivors of the battle.

Tokomon X is later seen with the few shown survivors on a rock, where he sits protected on WarGreymon X's shoulders. After Yggdrasil's destruction and the rebirth of the Digital World, Tokomon X is seen sleeping in the temple where Dorumon made his home and is reunited with his friend.

DexDoruGreymon
DexDoruGreymon was created by DexDorugoramon whose data was separated from Dorugamon's after the latter's capture by Magnamon.

It was through the DexDoruGreymon that Yggdrasil's Project Ark, the plan to erase all Digimon, was enacted in Digimon: X-Evolution. It seems to have an appetite for Mushroomon. DexDoruGreymon, like their counterpart DoruGreymon, seemed to prefer physical melee attacks over ranged projectiles. This resulted in the destruction of many DexDoruGreymon as the combined efforts of Wizardmon, Mummymon, Silphymon, MetalGarurumon X, WarGreymon X and Gallantmon X destroyed most of them. DoruGreymon destroyed some of them but at Gallantmon X's request left to see Yggdrasil. While Alphamon and Omnimon confronted DexDorugoramon and then Dexmon before confronting Yggdrasil himself, the X Digimon and their allies fought hard against the DexDoruGreymon but were finding themselves overwhelmed by sheer numbers and the DexDoruGreymon's destruction of the very fabric of the Digital World. The remainder were permanently destroyed for good when Omnimon X destroyed Yggdrasil.

DexDorugoramon
DexDorugoramon was created by Yggdrasil with a part of the Data of the captured Dorumon. The newborn Digimon then started to create a huge number of Digi-Tama (Digi-eggs), from which DexDoruGreymon hatched, which then started to delete the Digital World. Later DexDorugoramon confronted Alphamon and Omnimon in a large room to stop them from entering Yggdrasil's lair. It immediately attacked and when Omnimon attacked it with his Supreme Cannon, the damage caused by the blast was immediately healed. Omnimon did however manage to cause minor damage to the Undead Digimon with his Transcendant Sword. The evil Digimon then used its tail to slam Omnimon in the wall and it then wanted to attack Alphamon. Alphamon however used his Digitalize of Soul attack on the evil Digimon, thus shooting it into pieces. Afterwards the two Royal Knights entered Yggdrasil's lair but while they confronted the Host Computer, the pieces of DexDorugoramon reformed into Dexmon, which then again attacked the two knights.

Dexmon
When DexDorugoramon was destroyed by Alphamon, the shattered fragments of his body recombined into the even more powerful Dexmon in order to defend Yggdrasil against Alphamon and Omnimon. Smashing through the floor into Yggdrasil’s inner sanctum, Dexmon managed to capture Omnimon and attacked him with an energy blast. However Alphamon flew in front of Omnimon, thus protecting him. He then called forth the Ultimate War Blade King Dragon Sword and used it to free Omnimon by slashing the sword in Dexmon's arm. However Alphamon's arm also took the same damage. Alphamon then fought the powerful evil Digimon and when he saw that every damage he inflicted up Dexmon was also thrown back to him he finally realized Dexmon's true nature. As a result, Alphamon threw his sword like a boomerang so that it impaled both him and Dexmon. He then told the shocked Omnimon that Dexmon was his shadow and afterwards gave him his X-Antibody while he and Dexmon merged back into Dorumon.