Reiss has white short unkempt shoulder-length hair and pupiless eyes. He wears a long cloak with a hood and a black collar around his neck.
Reiss was originally a member of Fairy Tail, being in the same generation as Makarov. At some point in his lifetime, Reiss became a Dragon Slayer with the properties of a Spirit Dragon, which enabled him to take on their power.
However, on his way to work, Reiss became gravely injured by monsters and was rushed to Porlyusica in the guild hall, but by then he could not be saved. In his final moments, Marakov pleaded to Reiss to remember their guild bond as a family before the latter passed on.
His spirit lingered thanks to his Spirit Dragon powers but forgot about his previous life. He later joined Diabolos, a guild exclusively comprised of fifth generation Dragon Slayers that are among those who can see him, to gain power to invoke revenge on his killer.
100 Years Quest arc
Magic and Abilities
Spirit Dragon Slayer Magic (霊の滅竜魔法 Rei no Metsuryū Mahō): Reiss is able to use this Magic that allows him to gain the abilities and characteristics of a Spirit Dragon, which enables his spirit to linger on after his physical death; not to be heard or seen by anyone other than a Dragon or a Dragon Slayer. He can also use the souls of the dead as a means of attack  and become intangible like a spirit, giving him an immunity to any corporeal attacks.
- Dragon Spirit (竜の魂 Doragon Supiritto): Reiss create a large soul-like dragon mouth that renders the target immobile and causing damage with the souls of the dead before engulfing them in a fiery explosion.
- Possession: (憑依 Hyoui): This spell allows Reiss to possess a living being while depending on the syncho rate his abilities can be enhanced.
Dragon Force (竜の力 Doragon Fōsu): Like all Fifth Generation Dragon Slayers, Reiss has the ability to use Dragon Force. However, the use of it is forbidden as it differs from the previous generations.
Battles & Events
|Guild Master||Georg Reizen|
|Members||Kiria • Madmole• Skullion Raider • Suzaku|
|Black Dragon Slayer Knights||Suzaku|
|Five Dragon Gods||Ignia • Mercphobia • Selene • Viernes|
|Deceased||Acnologia • Aldoron • Acnologia (Dragon) • Animus • Atlas Flame • Belserion • Dark Dragon • Grandeeney • Igneel • Irene Belserion • Levia • Metalicana • Motherglare • Rock Dragon • Scissor Runner • Skiadrum • Weisslogia • Zirconis • Zirconis (Spirit)|
|First Generation||Acnologia • Gajeel Redfox • Irene Belserion • Natsu Dragneel • Wendy Marvell|
|Second Generation||Erik • God Serena • Laxus Dreyar|
|Third Generation||Future Rogue Cheney • Rogue Cheney • Sting Eucliffe|
|Fourth Generation||Quartum Army|
|Fifth Generation||Georg Reizen • Kiria • Madmole • Nebaru • Skullion Raider • Suzaku • Reiss|
|Deceased||Acnologia • Future Rogue Cheney • God Serena • Irene Belserion • Reiss|