Su

Su is the 7th Flame-Chaser and a psychic MANTIS. As a Pioneer, he was in charge of Project Valuka and Project Regulator. 
==Appearance==
Su appears as a young man with a fair complexion. In the manga, he has knee-length gray hair, while in-game, his hair has teal-green highlights. His eyes are fuchsia-colored with green pupils, although they are often closed. 
In the manga, Su's clothing consists of a black polo with gold details on the collar and breast pocket, with a white sash over his left shoulder. The sash has a gold pin on the shoulder. On his left ear, he wears two black helix earrings and a gold hoop earring. He wears loose gray jeans fastened with a black belt with a green detail. On his belt, he appears to have a dream catcher hanging from his left side, and two other trinkets on the right side. On his right hand, he wears a dark-gray glove, while his left hand is bare. His left hand is decorated with several types of symbols, including a tattooed ring on his index finger. He wears white boots that reach up his calf.
When Su was still a doctor, he wore a lab coat, a white shirt, and black leggings. During his time at MOTH, he was seen wearing the standard lab coat, white gloves, a black long sleeved polo, and black pants.
While he was a high schooler, he had a short haircut and wore a black and white uniform with a yellow tie.
==Personality ==
Su was a very calm, serene, wise, kind, and polite man. Unlike his fellow MANTISes, he was not a fighter and wasn't willing to fight unless it was deemed necessary, as shown as he was amicable to Durandal until she refused to follow his plans. Similarly, he wanted to talk with Kevin and appeal to him, asking him to stop Project STIGMA, until Kevin fought back.
When he is serious or ready to fight, he opens his eyes.
Su believes that no one has the right to play as a god or decide the fate of humanity. He also cares deeply for his friends and allies and shares compassion for people as a whole. Kevin describes him as someone whose consciousness weeps when innocent people die, as he was distraught that the reason he survived Honkai sickness was due to the sacrifices of other people who died from Honkai sickness, as well as opposing Project STIGMA. He made medicine for Dr. MEI when she was suffering from Honkai sickness and was able to stall the sickness for a long time, and promised to her that he will stay by Kevin's side and help Kevin to stay on the right path. When he deemed that Kevin was going too far, he honored Dr. MEI's wish and confronted Kevin, resulting in a physical fight between the two.
Despite it all, he still regards Kevin as his best friend. When he was thrown out of the bubble world by Kevin, for a brief moment he sees a younger version of Kevin smiling at him through the cold and distant stranger he thought Kevin was, realizing that the Kevin he was friends with never left. In his final moments, he reflects on his bond with Kevin and the one leaf that he wants to hold dear is one with him and Kevin in high school.
In his younger years, he was persistent, stubborn, and selfless.
==History==
Before the Honkai happened in Fire Moth era, Su and Kevin were close friends. But as the Great Honkai broke out in Nagazora City, Kevin became mute. Four years later, Su became an excellent doctor, dedicated to eradicating "Honkai Diseases". During this time, his talents were discovered by the Fire Moth, and he received an invitation to join the Fire Moth. In a disaster that affected his city, he met Kevin again. At this time, Kevin was already a Fusion Warrior under the Fire Moth. Su also joined the Fire Moth in the footsteps of chasing his best friend in pursuit of a way to eliminate the Honkai.
At an unknown point in time after joining the Fire Moth, Su accepted the transformation and became a Fusion Warrior. At about the same time, the 8th Herrscher awakened. The 8th Herrscher uses the Internet to spread infected keywords, so that people who see the keywords fall into a deep sleep that cannot be awakened. The result is only death. Su passed the spiritual defense line woven by the Herrscher shortly before the Fire Moth defense line was broken, successfully trapped the 8th Herrscher. But the Fire Moth suffered heavy losses. SU's mentor also died in the process.
In the battle of the Final Herrscher, Su as a Fusion Warrior commanded the final battle by watching on the earth. After the Moonlight Throne was burned down, Su ordered everyone to sleep in the refuge. At the same time, he ran to report the good news about Kevin's survival to Dr. MEI, but Dr. MEI had already been infected with the Honkai disease and mentions that she can barely see SU's face. Su then accepts the "Operator" plan that MEI proposed while she was still alive, and entered the refuge with Kevin, who had returned from the moon, only to find MEI dead. During the 50,000 years that Kevin was asleep, he has been observing the parallel worlds inside the 2nd God Key.
==Story ==
===Second Key===
In the Britannia 1500 years before the current timeline, dubbed by the people, "The Lady in the Lake", SU, and Kevin gathered together with a refuge under the Tamesis to discuss the progress of the "plan" with Hua. After confirming the failure of the "Project Ark" plan, Hua left to complete a mission, and Kevin said he would start the "Stigmata" Project. Su understands at this moment that Kevin has lost his emotions of compassion and blinded with only the determination to eliminate the Honkai, and that it was time to fulfill his responsibility as a "regulator".
Su baited Kevin to Seed of Sumeru to talk over Kevin's choices, however Kevin wanted to fight Su to show him that he was wrong. SU, after being defeated by Kevin, activated Project: Regulator to trap both in Sea of Quanta by dropping the Seed of Sumeru. In order to prevent him to continue the Project: Stigmata which is a Project which risks the death of many, however all the survivors will have a Stigmata, which is a chance to defeat the Honkai. Kevin stopped the fight as Su threw himself in front of the Judgement of Shamash, determined to do anything to stop Kevin, including giving up his life. Kevin froze the Judgement of Shamash and to keep Su alive, he threw Su out of Seed of Sumeru and drops to the Sea of Quanta as he tells Su to continue Project: Valuka.
After teaching a child who had awakened his Stigma how to use it, during an unknown year, Su imprisoned himself in Seed of Sumeru as an act of redemption.
The Second God Key fell into the hands of Schicksal in London, and Durandal was ordered to perform the task of entering the Second God Key. After being teleported by the God Key, Durandal met Su in Seed of Sumeru. Su then revealing his identity and experience, left his own plan for the Honkai to Durandal.
Su came to the high-dimensional space at the end of his life, and was called the "the conscious" by his will. In order to explore the truth of the universe above the Honkai, Su began to play chess with his will...
===Testing Blade===
Su makes contact with the repaired Book of Fuxi and Herrscher of Sentience inside the latter's mind space, appearng as a ball of mist. Without introducing himself properly, he urges the Herrscher to accept his request to stay where they are instead of looking around bubble universes for Fu Hua who went missing.
==Trivia==
*He bears a resemblance to the Salt Snow Holy City citizen Vita, however any connection between them is currently unknown.
==Other Languages==
==Navigation==
==Notes==
==References==
Category:Honkai Impact 3 Wiki