Rias

Biodata

Feature	Details
Name	Rias Gremory (莉雅丝)
Alias(es)	Red-Haired Extermination Princess 2130
Species/Race	Pure-blooded High-class Devil 2057 2084
Gender	Female
Affiliation	Gremory family; Supernatural Research Club
Occupation/Role	President of the Supernatural Research Club; next head of the Gremory Ducal House 2061 2113
Status	Active
First Appearance	Chapter 2055

Background / History

Rias is the younger sister of Sazex Gremory, the Demon King Lucifer. After Sazex assumed the Demon King’s duties, she became the prospective heir of the Gremory family. She seeks to strengthen the family through her own achievements rather than relying on her brother’s authority. 2088 2174

As a high-ranking devil, Rias commands a group of reincarnated devils through the Supernatural Research Club. She has saved and reincarnated several of her familiars, including Yuuto Kiba, Aisha, Genoa, and Gasper. 2077 2084 2137 2141

Her family arranged her engagement to Riser Phoenix in the interest of preserving pure-blooded devil lines. Rias opposed the marriage and ultimately settled the dispute through a Rating Game, ending the engagement after her side’s victory. 2084 2087 2103

Appearance

Rias is a renowned beauty at Kuoh Academy and in the Underworld, distinguished chiefly by her blood-red hair and commanding noble presence. 2064 2088

• Blood-red hair, shared with her brother Sazex. 2088
• Carries the bearing of a high-born devil and Gremory heir. 2113 2166
• Is widely admired by Kuoh Academy students. 2064

Personality

Rias is proud of her lineage and fiercely protective of the Gremory family’s honor. When Genoa implied that demons might cooperate with Fallen Angels, Rias rejected the accusation outright and asserted that she would never stain her family’s name. 2113

Despite her aristocratic confidence, she places great importance on her familiars’ safety and growth. She refuses to treat them as disposable assets, creates battle plans that let them prove themselves, and personally takes responsibility when their lives are at stake. 2077 2094 2189

She is persistent and openly possessive regarding Chen Fan, first attempting to recruit him as a servant and later claiming him publicly as family. At the same time, she respects his refusal to be reincarnated against his will. 2057 2065 2137

Abilities & Skills

Destructive Magic and Crimson Flames

Rias wields powerful destructive magic, including crimson flames dark enough to appear nearly black.

• Incinerated a Fallen Angel with her crimson flames during the church operation. 2074
• Used destructive flames to execute Riser after extracting Aisha’s stolen Sacred Gear. 2077
• Used destructive magic to defeat Sona Sitri in their decisive Rating Game confrontation. 2189
• Executed Theodora Astaroth and destroyed the bodies of his allies after sentencing him for collusion and crimes against innocents. 2195

Devil Reincarnation

As a devil King, Rias uses devil chess pieces to reincarnate the dead as members of her peerage.

• Reincarnated Aisha as her Bishop after restoring her Sacred Gear, Mother’s Smile. 2077
• Reincarnated Genoa as her Knight after the Holy Sword incident. 2137
• Could not reincarnate Chen Fan through ordinary means, as even her full set of pieces was insufficient for him. 2057
• Later accepted Chen as a familiar after he analyzed and temporarily fused with a devil chess piece himself. 2175

Magic Arrays and Gremory Authority

Rias routinely employs magic arrays for transport, concealment, identification, and devil-related rites.

• Marked Chen Fan with the Gremory family crest, identifying him as under Gremory protection. 2057
• Used hypnosis magic to make Chen Fan’s presence at Issei Hyoudou’s home appear natural to Issei’s parents. 2064
• Teleported members of her group between locations and back from Rating Game spaces. 2079 2103
• Exercises legal authority in Gremory territory to arrest rogue devils and pass judgment on criminals. 2110 2200

Rating Game Leadership

Rias is an accomplished commander who prioritizes team coordination over simply overwhelming opponents with Chen Fan’s strength.

• Assigned Kiba and Koneko to trap-setting, Akeno to illusions, and Aisha to support during the Phoenix Rating Game. 2094
• Deployed her peerage across multiple floors and trusted Chen Fan to confront an enemy main force alone. 2178
• Adapted to Sona Sitri’s scouting and hit-and-run strategy, eventually leading her team to victory. 2188 2189

Equipment / Weapons / Items

• Devil chess pieces — Used to reincarnate and assign ranks to her familiars. 2077
• Gremory family crest — A protective mark placed on Chen Fan to identify him as one of Rias’s people. 2057
• Magic communication devices — Issued to her team for coordination during Rating Games. 2180

Relationships

• Chen Fan — Initially a prospective servant and reserve member whom Rias marks with Gremory protection; their relationship develops into a mutual romantic attachment, though Chen resists being treated as her subordinate. 2057 2077 2167
• Sazex Gremory — Her elder brother and the Demon King Lucifer. Rias admires him but wants to succeed without depending on his influence; Sazex prioritizes her happiness over political marriage. 2088 2140 2141
• Akeno Himejima — Rias’s Queen and Vice President. Akeno is a trusted confidante and frequent partner in combat and club affairs. 2057 2074
• Yuuto Kiba — Her Knight and a former Holy Sword candidate whom Rias saved through reincarnation. 2058 2084
• Koneko Toujou — Her Chariot and a dependable close-range member of her peerage. 2058
• Aisha Aljett — Her Bishop, whom Rias resurrected after the Fallen Angels extracted her Sacred Gear. Rias guides her adjustment to devil society. 2077 2082
• Genoa — Her reincarnated Knight and former Church Holy Sword wielder. 2137
• Gasper — Her Bishop, sealed away because his time-stopping Sacred Gear was dangerous and difficult to control. 2141
• Sona Sitri — Childhood friend, fellow high-class devil, and competitive Rating Game rival. 2065 2189
• Grayfia — Sazex’s wife and Rias’s sister-in-law; Grayfia worries about Rias’s duties as the future Gremory head. 2083 2103
• Riser Phoenix — Her former arranged fiancé. Rias openly rejected him and resolved their engagement through a Rating Game. 2084 2103

Story Role / Major Arcs

Recruitment of Chen Fan

Rias takes interest in Chen Fan after witnessing his unusual strength against Fallen Angels. Believing his power to be a Sacred Gear, she tries to recruit him as a reincarnated devil, marks him with the Gremory crest, and introduces him as a reserve member of her group. 2055 2057 2058

Aisha Rescue

During the church operation, Rias aids in defeating Fallen Angels and learns that Aisha’s Sacred Gear has been stolen. She extracts Mother’s Smile from Riser, executes the Fallen Angel, restores the Sacred Gear to Aisha, and reincarnates Aisha as her Bishop. 2074 2077

Phoenix Engagement and Rating Game

Rias’s forced engagement to Riser Phoenix brings her personal wishes into conflict with devil nobility. Rather than accept the marriage, she enters a Rating Game, commands her peerage’s defense, and wins the match that ends the engagement. 2084 2087 2094 2103

Holy Sword and Kokabiel Incident

Rias refuses to cooperate with Fallen Angels despite the danger posed by Holy Swords, insisting on the honor of the Gremory family. When Kokabiel threatens Kuoh Academy, she helps organize its defense and later secures recognition for the capture of powerful Fallen Angels. 2113 2128 2136

Underworld Registration and Rating Games

Rias brings her familiars to the Underworld for formal registration and introduces them to Gremory territory. She later accepts Chen Fan as an unprecedented familiar after his self-directed fusion with a devil chess piece, enabling him to officially join her Rating Game team. 2164 2175

Rias defeats Zephyr Graciarabos with Chen’s aid, increasing her standing in the Underworld, then leads her team to victory over Sona Sitri through trust in her familiars and her own destructive magic. 2178 2183 2189

Theodora Astaroth Affair

After learning that Theodora Astaroth colluded with the Group of Calamity and targeted Aisha, Rias assumes responsibility as Gremory’s next head and sentences him to death. 2191 2195

Kyoto Assignment

Rias accepts Serafall’s request to assist with the kidnapping of Kyoto’s demon leader, demonstrating her willingness to carry out duties beyond Gremory territory. 2219 2220

Trivia

• Rias’s peerage ranks are based on chess pieces; she is the King. 2077
• She publicly presents Chen Fan as both her servant and her distant cousin at Kuoh Academy to legitimize his transfer. 2064 2067
• Her family’s territory in the Underworld is vast enough for her to allocate separate territories to familiars such as Aisha and Genoa. 2165