Kyle

Past timeline
Kyle's origins still remain a mystery. In the past war of destruction Kyle was called one of the strongest men in the continent of Aisha. He is given an assassination task to kill Teo who was also regarded as one of the strongest men in the continent. he fought with Teo for three days and three nights and the battle ended in a tie. They both were injured and left with scars. Kyle became famous after murdering a shadow clan executive known as the Grim reaper and deathbringer. Since this, Kyle was pursued by Ballista, the daughter of the grim reaper.

Season 1
Hired by an unknown person to kill Teo. He was unsuccessful and was scarred across his face as a result from fighting Teo. The battle ended in a draw and lasted 3 days and 3 nights. Due to his strength, he was formerly a member of the Four Lords.

Season 2
It is revealed he was working under Dellons and meeting in secret in Yui's Song.

He vows to get revenge on Teo and kills all the Night Crow members. He meets awakened Taka and is defeated but Kyle awakens when Bai Jiao appears and inflicts some power of destruction into him and fights Taka who can no longer defeat him with his new awakened power. Taka then leaves.

Season 3
Kyle meets Teo who was heading to the Dark Magic Research Tower. Teo and Kyle argue and Kyle makes it clear he wishes for them to fight again since their last fight ended in a tie. However, Teo leaves for the top of Dark Magic Research Tower after noticing a strange aura from it. Kyle is angry that their fight has been postponed. Teo awakens, Kyle meets with him and they confront each other after trying to go to the heavenly world. Eventually both fall to the traps of Bai Jiao.

Season 4
While Omog and Karl Heron are fighting the shadows of the abyss in the mysterious forest, they encounter Kyle, who was driven mad by the power of destruction. Omog tells Karl to quickly hide as Kyle will surely try to kill him. Karl hides and listens the conversation between Kyle and Omog. It seems that Teo had tasked Omog to watch Kyle closely and make sure he doesn't create more chaos. Kyle was actually unaware that Omog was a night crow. Omog tried to heal his injuries and keep an eye on him but Kyle argues with Omog and refuses any more treatment. Kyle then quickly vanishes.

Trivia

 * His awakening was teased with an image of chains that appeared in world 12.
 * He may come from another world.

Season 1

 * Four Lords of Old

Season 2

 * Ballista: "Do you think you can defeat me?"
 * Kyle to Night Crow: "I will finish you all!"

Season 3

 * Night Crow: "I'll kill you all!".

Season 4

 * Kyle to Night Crow: "Don't you dare think this is the end!"