Geildon

Darkness Messenger Geildon (闇の使徒ガイルドン Yaminoshito Gairudon?, 1-2): The first of the Evoliens to attack Earth, he was originally Mahoro's older brother Mizuho. Like Mahoro, he felt Asuka betrayed them and must be punished, discarded his old name. He managed to defeat Asuka in battle and take possession of the Cursed Armor. Once on Another-Earth, Geildon led the attack with the Burstosaurs and the Anamolicarus. But after his defeat, mortally wounded, he had Jannu kill him so she can use the Curse Armor to fulfill their revenge on Asuka.

Cursed Armor
A suit of armor from DinoEarth that turns its owner into a monster bent on destroying everything in sight, passing to the one who defeat its wielder. It was because of Asuka that the armor came to Evolien hands by Geildon who defeated him, maintaining his freewill. Jannu succeeded Geildon in wielding the armor before Asuka took it back to save Mahoro. To free him from it, Mahoro reassumed being Jannu and teamed with Mikoto to take it. However, as Mahoro planned, as Asuka was defeated by two people rather than a sole individual, the armor dissolved once it bounded to Mikoto. By the finale, Dezumozorlya used Asuka and Mahoro's fear of the armor to recreate it as Wicked Life Soldier Armor DezumoGevalus, which was soon destroyed by AbareYellow and AbareBlack.