Theresis (Arknights)

Theresis, a Sarkaz from Kazdel, is the twin brother of Theresa, the former monarch of Kazdel. Both siblings were students of Nezzsalem, the Nachzehrer King, and were part of the "Six Heroes" who defended Kazdel against a joint crusade in Terran Year 898. After the death of King Yliš and the collapse of Kazdel, the Black Crown chose between Theresis and Theresa to inherit the Lord of Fiends' powers. Theresis voluntarily stepped aside, believing he was not fit to be a symbol of hope, and pledged his loyalty to Theresa, aiming to protect the Sarkaz people through his military prowess. He participated in The Royal Court, which is a conservative political faction within Kazdel, made up of Sarkaz nobles and influential figures. They traditionally hold power and influence over Kazdel’s internal affairs and are resistant to reform or idealistic changes—like those proposed by Theresa.

Terra is a war-torn world plagued by natural disasters and political instability. The land is shaped by constant movement of Catastrophes—devastating, magic-fueled disasters that force civilizations into nomadic lifestyles. Its inhabitants are humanoid beings, many of whom possess animal-like traits and are divided into diverse races and nations with deep historical conflicts, called the Infected.

Oripathy exists within this world, a deadly, contagious disease caused by exposure to Originium, a mineral left behind by Catastrophes. While Originium grants magical abilities (Arts), it also slowly crystallizes the body of the infected, ultimately killing them. Those afflicted are called the Infected, and are often feared, exiled, or persecuted—regardless of their symptoms or intentions.

Oripathy isn't just a disease—it's a social fault line. Nations exploit, ignore, or quarantine the Infected, leading to deep resentment, rebellion, and tragedies, they try to fighting back against the cruelty they’ve endured. In this world, survival is often political—and compassion, dangerous. The Sarkaz got the worst treatment of all. That's why Theresis planned to go about it that way aswell, but Theresa talked him out of it, for a bit.

But then, Theresis lost his patience, thinking the only way to find peace was through Military Power, he sent assassins to Babel (The Predecessor of Rhodes Island), and by a series of unfortunate conditions, where the Doctor was manipulated by Preistess to disable the Defense Systems, allowed Theresis to kill Theresa. Leaving Amiya, Kal'tsit and others devastated from her death. Theresa was the King of Sarkaz when she died, but it was passed to Amiya. The Royal Court supported Theresis in his coup against Theresa, aligning with his goal to unify and strengthen Kazdel through military and authoritarian means. Essentially, they represent the old guard of Sarkaz authority.

Kazdel, (Theresa and Theresis' origin) is the ancient, crumbling homeland of the Sarkaz, a race long feared and marginalized for their connection to war and dark Arts. It is a land soaked in blood and shadow—once mighty, now fragmented by internal strife, civil war, and betrayal.

Located in the western part of Terra, Kazdel has no stable government or centralized rule for much of its history. Power shifts constantly between warlords, nobles, mercenary clans, and supernatural forces. Its cities lie in ruin, and its people are scattered, surviving in tribes or under the boot of stronger factions.

Despite this, Kazdel is a place of immense arcane power. The Sarkaz wield potent Arts and are deeply tied to Terra’s mystical forces. That strength, however, has made them targets—used as mercenaries, reviled as monsters, and denied any seat at the table of power.

Under Theresis, Kazdel has begun to reorganize—no longer content with survival, but hungry for unity and vengeance. He seeks to forge a true Sarkaz nation out of the ashes, one that will no longer bow to any foreign power.

As Regent, Theresis has been involved in various political schemes, including secretly supporting the Reunion Movement to distract other nations from his true intentions. During the royal feud in Victoria, he was invited to pacify the situation, subsequently occupying the palace of Londinium and forbidding other aristocrats from entering the capital. He ordered the reconstruction of the Shard into a giant Catastrophe manipulator and the building of an airship fleet, aiming to start a world war against all Terran nations and reunite the Sarkaz. Hoping to destroy Rhodes Island in the process.

Speaking of- Rhodes Island is a R&D organision that aims to tackle Oripathy and hopefully find a cure to it's effects. This organisation is led by Amiya, the Doctor, and Kal'tsit. They wanted to find peace through non-forceful means, but ultimately end up fighting organisations like Reunion and the Military Commission to make them stop.

Nazareth, a man that Theresis severely misses, used the participate in the Royal court. His family moved from Kazdel, but returned to help the wounded throughout the war, helping Theresis in the process. But he hates him now, knowing that he was the one that killed Theresa, yet... misses him. They were close friends back then, but haven't seen each other in ages. Nazareth is aslo a Nachzehrer Sarkaz, which suffer from constant necrosis, and resort to cannibalism. When Nazareth ate his own kind, he despised how he was able to view the memories of people he ate, Nazareth was a medic. He served Theresis for 100 years. They grew close throughout their situationship.