Sun Wukong

Past Timeline
His webtoon starts with Sun Wukong in a test tube, surrounded by the jade emperor and his advisor, Arahat. They mention his circlet, seemingly holding special powers. The story then cuts to the past, where he was born in the mountains and thanks to his physical strength, Sun Wukong became the king. He was then helped by celestial disciple and 'doll' (later revealed to be Mist) who woke him up from his slumber. Sun Wukong nicknamed her Xuanzang. Sun Wukong would often cause trouble in the heavenly palace and was eventually kicked out by the jade emperor. Xuanzang and wukong worked together and traveled to many areas as a team, they developed a close bond. The celestial war commander, wolf general, ordered him to capture 'Red boy' to which Sun Wukong thought it would be easy as cake. Eventually Sun Wukong meets Red boy and attacks him. They fight vigorously and in the middle of the battle Xuanzang sacrifices herself to save Sun Wukong. Red boy flees when Sun Wukong unlocks his true powers in his circlet. The war is finished and the wolf general orders his valkyries and soldiers to retreat as well. Arahat manages to create a seal and control Sun Wukong who is on a rampage. It is revealed that Red boy was following his father's orders, Niu Mo Wang, who wanted to destroy the heavens. Eventually a new replica and doll of Xuangzang is made to continue watching Sun Wukong. Xuanzang and Sun Wukong both wish to explore the heavens freely one day. Arahat promises that if Sun Wukong seals Niu Mo Wang his wish will come true, freeing Xuanzang. Eventually a massive fight breaks out between Sun Wukong, Red boy, Arahat and Niu Mo Wang. Arahat betrays and uses Sun Wukong to seal Niu Mo Wang, Arahat manages to control Red boy and manipulates his own monsters to control him. Xuanzang is killed again in the battle and Sun Wukong wakes up trapped in a test tube like in the beginning. The name 'Freyja' is then mentioned as the series ends.

Season 1
Sun Wukong first appears in episode 3 where he is strikes Evan in the head and knocks him out. Hellenia explains to Karin that Sun Wukong was locked away in the mountains and was formerly a part of the celestial world. Sun Wukong introduces himself as a member of the Four Lords and is very rebellious. Sun Wukong is known for his arrogant and troublemaker behavior. He also appears in episode 6 where he fights against Jave. Eventually Sun Wukong goes as far as kidnapping Rachel and her friends have to go finding her.

Season 2
He starts plotting alongside Dellons and together they start to work with the dark magic research tower and experimenting on sages. In his awakening scenario, Wukong had returned to Sage Peak after the curse of destruction spread two years ago. In order to control his anger, Wukong continued his sage teaching and begin to live like a sage but the power of destruction continued to live in his mind so he embraces the power and awakens while he talks with Niu Mo Wang, who seems to be sealed away.

He continues to seek revenge of the Heavens and begins working with the Dark Knights, specifically Dellons. He is also associated with the Dark Magic Research Tower. It seems he is making a deal with Dellons regarding the fragments of destruction in exchange of Dellons helping him arrive at the Heavenly Stairs.

It is revealed that he was the one to kidnap Yu Shin and take him to the Dark Magic Research Tower.

In season 2 he also has a hostile relationship with Rin as he finds her to be messing with his plans.

Season 3
He also appears in map 14 scenario. In the last scene, he appears and laughs at Dellons who was unable to revive his fiancee even after obtaining the fragments and all the power of destruction. Sun Wukong managed to return to Khayangan to fulfill all his ambitions & goals and there he managed to find a new power. He went to a mountain and tried to get the power of Lava from an Ancient Monster that was sealed there but was injured in the process.

Season 4
He is no longer considered a part of the Four Lords in the relationship chart of season 3. His myth awakening reveals that he finally did succeeded in entering the heavens.

In episode 43 He fights with Freyja but her power is too much for him and she easily kicks him out. Freyja betrays him ad breaks the agreement they had made with each other. He's now a part of a group with seven members called the Seven demon lords. These are 'brothers' (not by blood)  who have been sealed away by the valkyries. Sun wukong plans to unseal them to overtake the celestial word from the valkyries and cause ragnarok. The first beast he planned to awake was Fenrir, a wolf creature. It is also revealed that one of the valkyries (Reginleif) is cooperating with Sun Wukong as she helped unseal Fenrir.

After being severely injured by Trude, Sun Wukong is left for dead but survives. At this time, a valkyrie named Reginleif appears and unseals Fenrir who was sealed away by the celestial guardians. Fenrir thanks Reginleif and helps Sun Wukong before he is devoured by hungry wolves who smelled his blood from the injuries.

In map 16 Sun Wukong realizes Mist is actually his friend Xuanzang and is angered to see what Freyja turned her into. He appears again fighting against the valkyries in map 16. Mist almost fatally injures all the demon lords but Karma appears and saves them. Sun Wukong then talks to Karma and Karma tells Rachel he's truly sorry and wants to fix his mistakes from the past, including one time kidnapping Rachel (in season 1).

Trivia

 * Sun Wukong is over 150 years old. Season 4 takes place about four years since season 1, making Sun Wukong technically 154.
 * Much like Branze & Bransel, Wukong was formerly part of the Heavens, before being exiled by Fleyja.
 * His character is based from the monkey king of journey to the west.
 * Even though he's part of the demon lords, he's a celestial ape and sage and former heavenly resident. Most demon lords hail from a part of the heavenly world.

Season 1

 * Eastern Empire

Season 2

 * Velika: "Tell me everything you know!"
 * Hellenia: "Show me how to get to the heavens."
 * Dellons: "What is it you really want...?"
 * Rin: "You're getting in my way?"

Season 4

 * Freyja: "Sorry, but it's not going to go in your favor!".
 * Surtr: "I will win this time - no matter what".
 * Sage: "Lend me your wisdom"
 * Gerard: "Help me"