This is how I would imagine myself in Honkai Impact 3rd, based on the FanFictions I've read on Wattpad.

Name: Patrick Erwan

Family: A mother and a father, one brother, and a dog.

Birthdate: January 7th 1999

Country of origin: North America

A-Rank Knight. A freelance Knight.

Abilities: wields all elements and can cure pseudo-Herrschers and take away their powers. In other words, change a pseudo-Herrscher back into a human and normal complete Herrschers too. He can also use his own version of Shirou Emiya's Unlimited Blade Works. And uses Ki energy. And his powers/his core can't be taken by force because the core has an enchantment that prevents anyone from touching it or trying to steal it as only he can touch it. He also has the ability to go into peoples' minds and dreams.

Weapons: duel wielding swords, duel guns, duel pistols, duel machine guns, snipers, rocket launchers, duel laser blasters, gatling guns, and gauntlets.

Biography: He was born in North America on January 7th, 1999 one month before the 2nd Honkai Eruption happens. His mother is Costa Rican while his father is American and Irish and his older brother was foreign born in South America. His mother was a Valkyrie while his father was a Knight and were under contract with Schicksal from 1993 till 2000. They were friends with Kiana's parents and with Theresa. They were also friends with Welt Yang, Dr. Tesla, and Dr. Einstein. However after the 2nd Honkai eruption was over, his parents cut ties with Schicksal because of what happened to Cecelia, to Siegfried, and to Welt. 

He lived a normal life enjoying peace, his family and friends, and training to become a fighter like his parents. When he began his training as a Knight, Drago, The Herrscher of Dragon awoken inside of him. In his body he had the Gem of Protection, the Herrscher of Dragon's core. (I couldn't come up with a better Herrscher name).

A few months after Kiana, Mei, and Bronya enrolled at St. Freya Academy, he transferred over there in September of 2014 to improve his training and to fight the Herrschers. But also to investigate Schicksal. He also came for the same reason Welt Yang came to St. Freya. To gather intel.

Likes: Kiana, Mei, Bronya, Theresa, Seele, and Himeko.

Hates: Otto Apocalypse, Rita, Durandal, and formerly Fu Hua but forgave her after she helped Kiana with sealing Sirin.

His favorite Valkyrie is Kiana Kaslana because of her backstory.

Harem: Kiana. Mei, Bronya, and Seele.

And he's aware of the 4th wall.

Lore/Context/History

He's been on the adventures of the Valkyries from the chapter Xuanyuan Chronicle, Anti-Entropy invasion, and the Sakura Samsara up to the main story line.

At the start of Chapter 5 when Kiana went into the simulation of what happened at Siberia, Patrick followed her. But before going into the simulation he was able to get into the top secret files thanks to Drago going in the system with his Stigmata and hacked in. After finding out some truths, Patrick goes after Kiana.

After the simulation he tried to kill Fu Hua but is knocked out by Durandal. During the battle of Schicksal he was able to transform into the Herrscher of Dragon because of rage and anger. He tried to kill Otto Apocalypse only to find out he was cheating and his body was just a soulium avatar. Then he helped Himeko save Kiana from Sirin.

After the events of Chapter 9: Journey Continues in the main story line he washes up on shore with Kiana and is now protecting Kiana from Schicksal. He would comfort her. However, he also got a violent desire to kill Otto Apocalypse for everything he's done after escaping from Schicksal HQ.

Whenever Sirin tried to take control, Patrick used the ability of going into peoples' minds and dreams to go into Kiana's mind and dreams to prevent Sirin from overcoming Kiana. When Kiana got her Augmented Core Battlesuit he also got an Augmented Core Battlesuit. Just like the other Valkyries did. After the events of ARC City where Kiana was able to overcome Sirin, he and Kiana and Fu Hua search for a temple where the creator of Patrick's Herrscher core resided but also the Divine Keys reserved for the wielder of the core. The creator of the core and the Dragon Divine Keys is a dragon who existed during the old civilization and was friends with the Flame Chasers like with Kevin and Fu Hua. He created the core and Keys so humanity can have a Herrscher who fights for humanity. He hid the core and the Divine Keys in separate temples. In which Schicksal found the core in the temple where it was housed in and brought it to the Babylon labs in Siberia where Patrick's predecessor Drago got the core.

Once Patrick gets the Divine Keys, they go off. Then he goes to the Sea of Quanta thanks to Kiana's Void Portals and meets Seele.

Seele feels like a little sister to him. Every time Seele calls him Onii-Chan it gave him a sense of happiness and comfort. Whenever he gets angry, Seele calms him down with her little sister charm/comfort. He first meets Seele during the Quantum Diary event. But in the Winter Rhapsody event was when they first met except that the events are not cannon to the main story line but still, my OC first meets Seele in her Quantum Diary.

Then after helping Seele save Bronya, he returns back to Kiana and they return back to ARC City. When encountering Rita and Immortal Blades, he tried to kill Rita as revenge for helping Otto murder half of humanity but Kiana and Fu Hua stop him from killing Rita.

Why he hated Rita and Durandal is because of what they did for helping Otto Apocalypse reawaken Sirin and helped murder billions of people. And because they knew about the Celine Project and Otto's plans. That's why he wanted to kill them both. For helping Otto murder half of humanity.

But if Otto deemed Rita and Durandal are no longer of any use to him or if Rita and Durandal turn against Otto, my OC might forgive them and not hate them anymore. In which he did try to get rid of them after they found out his real intentions but they were able to avoid being gotten rid of. And my OC was able to find out that Durandal was the real Kiana while at Klosten.

During Chapter 14, he helps Kiana get rid of the bomb then he fights Durandal at full power after Mei loses. Then with guidance from Toriyama he pushes Durandal back temporarily buying time for him and Kiana to escape from ARC City. Only to get recaptured a day later. But thanks to Kevin attacking the base in Africa, Toriyama coming to rescue them, and Fu Hua sacrificing herself for them again, he and Kiana were able to escape.

Then they go to Nagazora City so Mei can find them. During their stay, Patrick protected Kiana till Mei found them. Then during chapter 17 when Mei became the Herrscher of Thunder again and betrayed them, Patrick got so angry that he tried to kill her after he transformed into his Herrscher form. Then after the fight when Mei beat Kiana, Toriyama told him to let her go. After letting her go he roared out like a T-Rex and shouted out. Then he and Kiana return to the Hyperion and are taken back to America.

During the arc with the Herrscher of Sentience, he, Kiana, and Bronya battles against the Herrscher of Sentience and helps Fu Hua get her body back. Then during battle agains the Heershcer of Dominion after Kiana gets abducted by the Herrscher he follows after them and saves Kiana then he assists. then watches the events of Everlasting Flames as Kiana became the Herrscher of Flamescion.

During the events of the Thus Spoke Apocalypse Arc he fights against Otto with Kiana and Durandal. And when he thought Otto was killed, he senses for him and instead of getting sent back with Kiana and Durandal, he goes after him to stop him from getting to the Imaginary Tree. Then he kills Otto and prevented him from saving Kallen. Then he went to the reality where Otto successfully saved Kallen but he gives her knowledge of the future to make sure that Otto never lives a happy life with Kallen. He also gives Fu Hua and Toriyama knowledge of the future to make sure they stop Otto. Then he goes through the reality Otto created where Kallen did not die and makes corrections to the reality to make sure that Kiana and Theresa get born, make sure St. Freya is established, make sure Kiana meets her friends and family at St. Freya, makes sure that Otto loses and fails more times, make sure that Otto is defeated and killed, and made sure his parents meet just like how Marty McFly from "Back To The Future" made sure his parents meet.

After he was done correcting the reality's timeline he ends up back at the Imaginary Tree. Then he creates another reality where Otto loses and fails all the time.

Then during the end of the world arc while on the moon fighting against Kevin, his master, Toriyama works on a new Herschel core for Patrick. And he joins the reunion of the trio Kiana, Mei, and Bronya. Then when the trio in their new Herrscher forms fight against Kevin he defeats them but Patrick goes up to him but is pinned down. But thanks to Toriyama, he gets his new Herrscher core and becomes the Herrscher of Justice. Then he heals and powers up the trio then together they defeat Kevin.

Once everyone in his harem was a full grown adult he marries Kiana, Mei, Bronya, and Seele. Their wedding was on the moon because Kiana can't leave it because her presence on Earth can kill everyone on Earth and she has to find a way to safely destroy the Honkai from Earth.

And that's everything about my OC/Self-insert. I might edit it in the future.