Chion

is a Holy Knight of Liones, serving under the Tristan Platoon of prince Tristan.

Personality
Chion is a rather crude and cynical, despite knowing that Percival was a member of the Four Knights of the Apocalypse, he still attacked him and lied that he was a from Camelot, even ensuring that he couldn't speak and defend himself using Sylph. He did the same thing to Anghalhad, Donny, and Nasiens, keeping them from speaking and almost suffocating them.

Like Isolde and Jade, Chion is loyal to Tristan, removing his powers after being ordered. He is hateful and vincitive, having no remorse for his actions; instead directing hatred at Percival, who mummified his arm, then pointed blame at Isolde attacking Percival first.

In mentioning Percival and Lancelot, his distate for them borders on elitist views, not trusting those he viewed as "country bumpkins". He chooses not to trust in prophecies, and instead himself, and those he himself believes in.

Chaos in Liones arc
Chion and Jade are looking at strange glowing stones in the sky when they see Isolde chasing Percival. Jade suggest that they must stop her, but seeing the Dragon Handle in the boy's possession, Chion says that he is a knight of Camelot so they both join Isolde. When Percival tries to explain himself, Chion trickily uses a Sylph to silence him, making his companions believe that he has no way to excuse himself. The three then attack Percival, Chion is surprised that Percival endures being suffocated by the Sylph and how the Sylph is scared to see his magic. When Donny, Nasiens, and Anghalhad arrive to help Percival, Chion summons the Sylph again to suffocate them and allow Isolde to assault them with her Morning Star. When they intends to finish them off, the three are interrupted by the arrival of Tristan. Despite explaining that they are knights of Camelot, Tristan says that they are wrong and orders Chion to remove the Sylph, which he reluctantly does.

When Tristan reveals that they are actually allies of the kingdom, Chion gives Percival a false apology. That's when Percival, dominated by a strange power, takes him by the arm and to everyone's horror, mummifies it. After Percival returns to normal after a confrontation with Tristan, the latter attempts to heal Chion's arm, but fails, assuming it must be some kind of curse that his Goddess magic cannot heal. Chion is furious at what they did to him, saying that he can no longer be a Holy Knight with an arm like that. Despite the fact that his friends blame Chion for his actions, Percival somehow heals his arm. Tristan then orders him to apologize and thank him, which Chion does, although no one except Percival takes his words seriously. Tristan then reproaches Chion for attacking Percival even with the information the king gave him about the Dragon Handle being in allied hands and how the Four Knights of the Apocalypse looked like. Chion excuses himself smiling that he was confused to see how Isolde persecuted him so viciously.

When Lancelot arrives to informs everyone that Gawain, the fourth Knight of the Apocalypse, has escaped, Chion, Jade and Tristan go looking for him at the east gate of the kingdom. Chion quietly complains about Lancelot's bossy attitude and how he treats Tristan. During the search, Chion questions if the Knights of the Apocalypse are really necessary. Jade reprimands him for doubting the king's prophecy, to which Chion says that he simply has a bad impression of Lancelot and Percival. Tristan defends his fellow Knights of the Apocalypse, but in the midst of the crowd, Chion separates from his companions and ambushes who he thinks is Gawain. Stating that he only trusts himself and not things like prophecies, Chion attempts to bury his target alive using his Gnome, but is stopped by Tristan and Jade who reveal that that guy is not Gawain but an apprentice who found the latter's armor.

Jade takes a detained Chion to the castle dungeon where he questions him about his actions. Chion berates him for doubting him childhood friend, but Jade insists that he tell him what his true intentions are to go against the Knights of the Apocalypse. Chion explains that he did it thinking of what was best for Tristan and to prevent him from being betrayed or delayed by these Knights of the Apocalypse in the worst case scenario. Jade concludes that Chion is too negative and asks why he just didn't express his concerns to Tristan, to which Chion says that he didn't want to be seen that way by the prince.

The two then discover a knight prowling the dungeon. Upon discovering that he is a knight of Camelot, Jade frees Chion and returns his staff to him. The knight deals a surprise sword blow to both of them, to which Jade recriminates his lack of chivalry even though the knight calls it a victory initiative. Chion scoffs that initiative is useless if they manage to fight back and prepares to use his Sylph, but the magic from the previous attack begins to freeze both of their bodies, rendering Chion unable to speak and in turn rendering their Spirit Arts useless. However, the two are saved by an explosion created by Guila. Chion is amazed to see the Vice Great Holy Knight, stating all the background information that he has about her. When the fight between Guila and the knight breaks out, Chion suggests to Jade that they leave, but Jade refuses. When Guila reveals the knight's identity as Jericho, Chion recognizes her as a former Holy Knight of Liones.

When Chion and Jade try to help Guila when she is at a disadvantage, Jericho avoids it by creating a wall of ice that Chion is unable to melt with his Salamander. The two watch from there as Guila breaks free from being frozen by assuming a demon transformation, but is once again trapped by Jericho's ice. When Lancelot arrives and saves Guila by throwing Jericho through a wall, he orders Jade and Chion to bring a frozen Guila to Thetis.

The night after the battle against Arthur Pendragon, Jade and Chion watch Tristan train with his swords.

Current arc
The day after the battle, Jade and Chion find Donny leaving his grandparents' house. Learning that he is Howzer's nephew, Chion scoffs at how he abandoned training and ran away and how his magic power only allows him to float things. Donny initially brushes him off saying that he is used to being made fun of, but when Chion insults Percival as well, Donny abruptly pulls him away with his Telekinesis and angrily tells him not to let him insult him. The feud is stopped by Gilthunder who informs Donny that he has an audience with the king and then questions Chion for his actions.

Chion and the rest of the Tristan Platoon participates in the meeting in the war room to discuss the situation with Camelot. There she makes fun of Gawain's size, leading her to set his head on fire for his insolence.

When Thetis teleports everyone to a landscape that has been stripped of various parts, leaving only empty spaces, Meliodas explain that it is the result of Arthur creating a new Camelot, something he heard from Percival's grandfather who was a former Holy Knight of Camelot. Chion asks if he really believes the words of an enemy Holy Knight, but Meliodas states that he believes him. Chion says that they not only have a relative of Arthur but also a pipsqueak from Camelot, which further undermines his confidence, leading Nasiens to defend Percival by claiming that his birthplace doesn't matter. When everyone is left despairing that they have no way to get to Camelot, Chion says that he feels a good wind and scoffs the Knights of Prophecy (but Tristan). He and the others are shocked when Percival suggests they go on an adventure together to find a solution.

Abilities

 * Chion is able to summon Spirits to aid him in battle. It is said that this art requires the most precise pronunciation within the entire magic system.
 * After Chion uses the command, the spirit traps the air around the target, blocking their voice and hindering their breathing.
 * At Chion command, the spirit grabs the target with large arms of earth, then crushes and entombs them.
 * Chion summons a Spirit that is able to breath fire.

Trivia

 * The Spirits Chion is able to summon are based on the s, mythic beings described in occultism and alchemy texts.