Roy

Biodata

Feature	Value
Name	Roy (罗伊)
Alias(es)	Osiris; King of Despair 90 694
Species/Race	Demon; Frost Demon bloodline, later altered into a Quantum Demon bloodline 295 544
Gender	Male
Affiliation	Burning Legion, as its third commander during the altered temporal history 650 733
Occupation/Role	Demon King; ruler of the Demon World 532 539
Status	Alive 757
First Appearance	1

Power Progression

Stage / Realm / Level	Chapter	Notes
Lower Demon	61	Although still a Lower Demon, Roy's combat strength was already comparable to some Middle Demons after developing his tail, magic, and defensive abilities.
Upper Demon	164 223	Advanced through the growth of his Frost Demon bloodline and accumulated power; his Upper Demon status is confirmed alongside ice, darkness, and lightning attributes.
Demon Lord	369 370	Reached Demon Lord rank and entered a Transcendent Form with greatly increased physical and magical power.
Demon King	539	Became the new Demon King after merging with Divinity, gaining perception of elements, fate strings, and Authority.
Quantum Demon	544	Void corruption transformed his body into humanoid mist; his race remained Demon, but his bloodline became Quantum Demon.
Original Sin Rank	730	A time leap increased his power to 3,699 times its prior Demon King baseline, far beyond the minimum Original Sin Rank threshold.
Chaos fundamental force	755 756	Became a new source of the fundamental force of Chaos, attaining power on the threshold of dimensional ascension.

Background / History

Roy was originally an ordinary young man from a peaceful era. After university, he worked in a major city to pay a mortgage; his hobbies included games, novels, anime, and spending time with friends. He was reborn in the Abyss World inside an egg, emerging as a demonic creature on a shore surrounded by blood-red seawater and countless other eggs 1.

Initially disoriented by losing his human body, Roy adapted by treating survival and strength as priorities. He used a private customization system fueled by souls to redesign himself, first replacing his fragile arrow tail with a segmented blade tail capable of piercing a half-meter-thick tree trunk and extending beyond its visible reach 9 10. Continued hunting hardened him; he became willing to kill demons of his own kind without emotional hesitation when survival demanded it 14.

Roy later operated under the Upper Demon Serlun, secretly gathering souls while avoiding becoming expendable. After witnessing Serlun abandon his forces during a retreat, Roy openly slaughtered the dwarven cleanup unit left behind on the battlefield and began acting for his own interests rather than Serlun's 61. He eventually escaped Serlun's control, returned to the Abyss, and began building a reputation under the name Osiris 66 90.

As an Upper Demon, Roy pursued power beyond his Frost Demon bloodline. He created equipment, acquired new elemental circuits, formed alliances with Julia, Benia, Cassandra, Fat Tiger, and Rafalo, and raised undead forces in Ashan. His campaigns against Alantir, Kha-Beleth, angels, and rival demons established him as a major power before he ascended to Demon Lord 199 288 343 370.

After becoming a Demon King, Roy merged with Divinity, developed Authority, and gained a mist-like Quantum Demon body. He fought the Archangels in Sanctuary but revealed that he did not intend to destroy the world; instead, he sought to preserve it as a future home for his adopted son, Selas 539 544 581.

Temporal turbulence later placed Roy throughout altered history connected to the Burning Legion. Recognized as Osiris, its third commander, he navigated Sargeras, Kil'jaeden, Archimonde, and the Dreadlords while discovering that his own future actions had already shaped the timeline 629 631 676. Successive time leaps and the power of one hundred trillion souls eventually elevated him beyond Demon King and Original Sin Rank into a being embodying Chaos itself 683 730 755.

Appearance

Roy's body has changed repeatedly through customization, bloodline evolution, fusion, Void corruption, and Chaos ascension. His original demonic form was dark red and reptilian, while later forms emphasized frost, black ice, armor, wings, mist, and increasingly inhuman scale 1 160 544 756.

• Dark-red skin with black patterns, sharp nails, demon horns, wings, and a tail after his rebirth 1.
• Segmented dark-red blade tail with three opening bone blades; spine developed blade-like bone fins after the modification 10.
• A muscular Lower Demon form that could grow to roughly two and a half meters while using Bloodthirst Technique 38.
• Four demon wings after later evolution; each additional wing had a wingspan of roughly six meters and developed a defensive keratin layer 224.
• Grim Winter Armor presents him as a black-armored frost demon with a fully enclosed helmet, scarlet pentagram-patterned eyes, skull pauldrons, and black-ice plating 160.
• Quantum Demon form consists primarily of controllable humanoid mist, with his two demon eyes and the Eye of Godhead remaining visible 544.
• At the peak of his Chaos evolution, he can compress an energy body of galactic scale into a roughly four-meter-tall form resembling a gray, chaotic sun 756.

Personality

Roy retains the practical outlook of his former human life but has adapted to the Abyss World's brutality. He is cautious around stronger beings, distrustful of manipulation, and willing to retreat rather than gamble his life on pride. He repeatedly plans around loopholes, contracts, enemy weaknesses, and the long-term value of souls 27 110 308.

He is highly creative and treats the system as a means to solve problems through customization rather than simple force. His body modifications, skill designs, armor, Dragon Balls, and experimental magic often draw on ideas from his old world's games, anime, and fiction 9 37 69 301.

Roy can be ruthless toward enemies and subordinates who challenge him, using fear, curses, transformation, and overwhelming force to secure obedience 320 346. However, he also protects companions such as Fat Tiger and Selas, shows mercy when he sees no reason to kill, and is capable of acting without malice toward mortals despite his demonic identity 53 187 581.

Abilities & Skills

Private Customization System

Roy can use souls to manifest body modifications, equipment, skills, and specialized materials.

• Modified his tail, wings, armor, magic, and weapons through custom definitions 9 14 160.
• Uses 3D and AE functions to model skills and effects before manifesting them 37.
• Can convert souls into Essence Demonic Energy Potions, though excessive use caused abnormal bodily reactions 63 69.
• Uses souls as both a resource and a strategic objective across worlds 131 683.

Frost Demon Power

Roy's original primary power is frost magic, which evolved into the mutated Cold of Utter Darkness.

• Creates frost shields, ice spears, ice storms, Cold Tornadoes, ice meteors, and frost slashes 95 223.
• His Black Domain of Oblivion can lower temperatures to an extreme condensed state capable of freezing even light-speed movement 370.
• Can neutralize material attacks with absolute-zero power in True Name Liberation 574.
• Possesses exceptional resistance to frost because frost is part of his essence rather than merely an element he casts 295.

Telekinesis

A power acquired through perfect T-Virus reinforcement and later evolved into Super Telekinesis.

• Forms compressed-air shields that provide a brief reaction buffer against attacks 49.
• Stops, redirects, or repels moving objects and attacks 61.
• Can force airborne enemies to land and restrain targets with overwhelming force 257 398.
• Evolved into Super Telekinesis after Roy became a Demon Lord 417.

Bloodthirst Technique

Roy's first custom-created magic skill temporarily boosts physical performance.

• Increases strength and speed by 40% for three minutes at the cost of 20 Magic Power 38.
• Can be cast on himself or designated targets 38.
• Enlarges his body and musculature while active, producing a blood-red aura 38 61.

Darkness and Dark Lightning

Roy possesses darkness-based abilities, including the Dark-Dark Fruit's attraction and Dark Lightning's destructive properties.

• The Dark-Dark Fruit grants strong attraction and helps Roy endure damage despite pain 61.
• Dark Lightning is negative lightning capable of annihilating souls 370.
• Can use dark curse magic effectively to weaken enemy forces before attacking with stronger offensive magic 261.

Mobility Skills

Roy possesses several methods of instantaneous movement and battlefield repositioning.

• Flash allows rapid evasive movement and was created together with Teleport 63.
• Teleportation Technique lets him travel directly to chosen destinations, including locating Fat Tiger after battle 66.
• His Quantum Demon mist body can pass through matter and perform spatial displacement beyond ordinary Flash movement 548.

Transformation Ray

A custom skill that transforms targets into food-like objects.

• Can forcibly transform even stronger enemies for approximately one second 369.
• Roy used it on captured dark elves and angel warriors, turning them into cookies or food 320 581.
• He designed the skill with restrictions to reduce soul consumption 301.

Dragon Slayer Magic

A universal anti-dragon skill manifested through Roy's tail.

• Causes dragon scales to emerge along his tail during use 268.
• Possesses a devouring enhancement attribute and improves his offense and survivability against dragons 270.
• Was created to counter Alantir's ghost dragon and other powerful draconic enemies 268.

Authority and Chaos Power

After merging with Divinity, Roy gained Authority: the ability to perceive and alter underlying information.

• His evolved demon eyes can see elements, microscopic magical structure, and strings of fate 539.
• Can destroy objects by disrupting their underlying information or altering molecular forces 552.
• Is particularly adept at manipulating extreme temperature through Authority 552.
• Later became a fundamental source of Chaos, gaining comprehension and control over time, space, elements, and universal laws 755 756.

Forms

Roy possesses several major combat forms.

• Flesh-and-blood form — his original evolving Frost Demon body 631.
• True Name Liberation — multiplies his physical body and magical power, transforming him into a gigantic Chaos Demon 574 631.
• Chaos Demon / Quantum Demon form — a mist-like energy body with vast size and regenerative adaptability 544 631.
• Half-Void form — manifests an Eye of the Void and void runes on his wings for activity within the Void 631.

Equipment / Weapons / Items

• Frostmourne — Roy's bound demonic sword; its curse effects include bleeding, strength drain, and later Mind Twist, which causes wounded targets to descend into mental chaos and attack allies 97 292.
• Grim Winter Armor — black-ice armor summoned by skill; it is indestructible in the sense that it cracks rather than being completely destroyed, and it provides broad elemental protection 160 166.
• Red Dragon Emperor's Gauntlet — a black gauntlet designed to enhance Roy's physical strength; its amplification can double his already immense force for a limited duration 358 577.
• Egg of the Red Sea — an artifact that healed Roy, generated his avatar, and may possess bloodline-fusion properties 216.
• Kanai's Cube — used to separate Divinity and contain the souls of defeated Demon Kings 608.
• Osiris Mark — a soul-collecting mark linked to cursed gold; it teleports souls of those who die near the marked gold 133.
• Dragon Balls — seven objects Roy scattered to establish a future return signal to the Heroes of Might and Magic world 69 244.

Relationships

• Julia — trusted partner and close companion; she plans alongside Roy and supports his ambitions and campaigns 199 374.
• Benia — ally and companion who assists Roy through deception, warfare, and political schemes; she impersonated Isabel during Roy's confrontation with Kha-Beleth 340 374.
• Fat Tiger — Roy's contracted Hell Hound and longtime companion. Roy protects him, communicates with him mentally, and relies on his tracking and combat ability 53 63 66.
• Rafalo — Osiris's Sky Dragon and contracted lifeform; serves as mount, artillery platform, scout, and later starship-like flagship 370 623.
• Cassandra — undead subordinate and part of Roy's inner circle; commands his undead army and helps shape Selas's upbringing 257 432.
• Selas — Roy's adopted son, a Nephalem and the Dark Messiah. Roy wants Sanctuary preserved so Selas can have a life beyond the Abyss 423 581.
• Sargeras — enemy, ally, and temporal counterpart. Roy fought and manipulated him, but also served as a Burning Legion commander under an agreement involving one hundred trillion souls 690 693 733.
• Lilith — powerful Demon King who assigns Roy dangerous tasks; Roy seeks to make deals with her for Nephilim secrets while concealing his true power where possible 199 227.
• Kha-Beleth — rival Demon Lord and Selas's biological father. Roy defeated him through prolonged manipulation, curses, and psychological warfare 346 423.
• Tyrael — Archangel opponent who eventually realizes Roy does not intend to destroy Sanctuary 581.
• Archimonde and Kil'jaeden — Burning Legion leaders whom Roy later killed and stripped of their souls 718.

Story Role / Major Arcs

Abyss Rebirth and Survival

Roy emerges from an egg in the Abyss, develops his customized tail and wings, learns to collect souls, and establishes himself as an unusually intelligent and dangerous Lower Demon 1 10 14.

Serlun's Army and Independence

While serving under Serlun, Roy secretly accumulates souls and develops combat magic. Serlun's cowardly retreat convinces Roy to act independently, culminating in the destruction of the dwarf cleanup force and Serlun's eventual death 48 61 66.

Cross-World Growth

Roy travels through summoned worlds, fights Dracula's schemes, Cesar's Dark God Church, pirates, angels, undead, dragons, and heroes, using each conflict to collect souls and develop custom powers 27 95 110 268.

Demon Lord of Ashan

After gaining allies and creating an army, Roy fights Alantir, captures the Seven Deadly Sins, battles angels and dragons, and challenges Kha-Beleth for control and influence in Ur-Hekal 288 292 340 346.

Demon King and the Sanctuary Conflict

Roy becomes a Demon King, battles the Archangels, and openly declares that Sanctuary is intended as a future home for Selas rather than a world he wishes to destroy 539 574 581.

Burning Legion and Temporal Turbulence

Swept across altered history, Roy is identified as Osiris, the Burning Legion's third commander. He assists in creating the Lich King, confronts Sargeras, leads Legion forces, and discovers that time travel has already embedded him throughout the universe's history 631 660 690 705.

Chaos Ascension

After receiving one hundred trillion souls and enduring immense time leaps, Roy exceeds Original Sin Rank and becomes a new primordial source of Chaos with power approaching dimensional ascension 730 755 756.

Notable Quotes

“That depends. When I want to be one, I am.” 581

“Since I dared to attack Upper Heaven alone, I naturally had something to rely on!” 581

Trivia

• Roy falsely claimed to be one hundred years old after becoming a Demon Lord; in reality, his life as a demon and time spent across worlds totaled only around ten years at that point 376.
• His first pet in his former human life was a French Bulldog secretly kept in his university dormitory, influencing his decision to create a hound companion after reincarnation 40.
• Roy repeatedly modifies his tail, using it as a blade weapon, a Dragon Slayer Magic vessel, and a focus for Transformation Ray 10 268 301.