Modryn Oreyn is the Champion of the Fighters Guild in Cyrodiil. He is a rather sharp speaker, quick to irritate and anger, but fiercely loyal to the Fighters Guild, and proud of the members that show skill and competence. He seems to have no tolerance for members who would tarnish its reputation, and indeed, deems any threat to the Guild, whether it is a single member or the whole of it, as one worth looking over carefully.
Oreyn's part in the Fighters Guild questline begins with a mission; a wizard named Argoth arranges for the retrieval of an artifact from a warrior named Azani Blackheart. The mission goes awry, with only 5 of 20 men returning from it. In the escape, Vitellus Donton, one of Vilena Donton's 2 sons, is slain, trying to defend the group as they flee. Oreyn tries to investigate the matter, finding out later that the Blackwood Company managed to complete the mission- he finds this hard to believe, he is unconvinced of any particular skill, and that instead something is amiss. He keeps a vigil over the Vilena Donton's remaining son, Viranus Donton, providing the young warrior with obscure contracts to keep the boy sharp, skilled and confident, while keeping it secret from his mother, at one point pairing him up with the player character. At the same time, he finds that the Blackwood Company seems to be taking over many jobs, leaving some Fighters Guild members to lounge while waiting for some form of money, and even losing members, who favor the growing business of Blackwood.
When it becomes too suspicious, and apparent that the player character is a little more than just skilled, he investigates further into the Blackwood Company. The wizard Argoth turns up dead, and the artifact missing, leading Oreyn to believe that the mission may well have been a setup. To expose Blackwood as frauds, he and the player character go to find and slay Azani Blackheart, whom is rumored to be holed up at the Aylied ruins of Arpenia. Upon arrival, there is no sign of anyone, save for a few rats and mudcrabs, confirming Oreyn's suspicions that Blackheart and Blackwood struck a deal, with the latter weaving a story at the expense of the Fighters Guild to build their reputation, while Blackheart keeps his artifact and simultaneously thins the ranks of the Guild. After slaying Blackheart with the player character's aid, he returns to the Fighter's Guild. [The game may glitch here, and Modryn will remain in the wilderness, near the Elvin ruins you just went through. Not sure what causes this.]
Later, he sends Viranus on yet another contract, with a group of guild members, but loses contact with them. The player character reveals that all of them died, though it is apparent that the Blackwood Company is responsible. Oreyn is expelled from the guild due to Viranus' death, but remains loyal, conducting investigations on Blackwood on his own in order to bring them down. Once the player character manages to re-claim his/her rank, Oreyn speaks with the player character. When the player's character manages to capture Ajum-Kajin, one of Blackwood's leaders, and interrogate him- they find that Blackwood is over 100 men strong, and that its leader is Ri'Zakar, but Ajum kills himself with an enchanted ring before he can reveal the secret behind Blackwood's strength.
As a result, Oreyn sends the player character to infiltrate Blackwood. He later finds the player character unconscious in Leyawiin, who informs him that Hist Sap is being produced, which is a powerful narcotic and responsible for the berserker-like characteristic of Blackwood Company fighters. As a dangerous side effect, the hist sap causes delusions, which explains the Blackwood Company's indiscriminant killing. After The Hist Tree is destroyed, Vilena Donton steps down as Guildmaster, and Oreyn becomes assistant to the player character, who takes Vilena's place.
When asked to become the player's second in command, Oreyn at first appears hesitant, and says that he is getting into retirement and that his Art is becoming quite good. Look behind him to see his picture depicting the interrogation of Ajum Kajin, which looks like it was painted by a very small child. But after a few moments thought, he reconsiders, sarcastically (though perhaps good-naturedly) remarking that the guild might well fall around the player's ears without Oreyn to keep him in line. After this, Oreyn becomes second-in-command, carrying out the player's orders while maintaining the guild in his/her absence.
- The Elder Scrolls IV: Oblivion (First appearance)