Theresa

Biodata

Power Progression

Background / History

Second Honkai War

Theresa participated in the Second Honkai War. Although she later boasts about her achievements, Himeko and Bronya challenge her claims using Schicksal’s records, and the system rejects “Theresa the Peerless Strategist” as an accurate description of her role 14.

Recorded footage shows the Herrscher of the Void taking Judah from her and leaving her submerged in water. Theresa summons the weapon back by relying on its ability to track Honkai Energy, then uses its golden chain to escape. After learning about Sirin’s past, she attempts to resolve their encounter without fighting. Sirin instead pierces her abdomen with a Void Lance that changes from illusory to solid, defeating her before she can activate Judah’s Zero Nominal Power 15.

Founding St. Freya Academy

Theresa established St. Freya Academy to shelter children imprisoned in laboratories during the Second Honkai War and orphans displaced by the conflict. She regarded their care as an obligation Schicksal owed them 64.

The academy receives substantial funding from Otto. Theresa initially insists that his support makes bankruptcy impossible, but increasing expenses, unpaid salaries, and funding cuts repeatedly strain its finances. Despite months without new funding, Otto observes that classes remain orderly and credits her management 7 50 100 129.

Appearance

• Usual form: Her body has remained physically twelve years old for many years despite her being an adult. Her childlike appearance becomes a frequent source of mistaken assumptions and embarrassment 14 99 376.
• Hair and eyes: Silver-white hair and clear blue eyes 7.
• Adult form: The Ring of Divine Grace gives her a taller, voluptuous figure, loose cascading hair, and a face that retains some baby fat. This appearance closely resembles Kallen 7.
• Height sensitivity: Losing even one centimeter to a system punishment deeply upsets her; she uses the ring afterward to recover her confidence 99.

Personality

Theresa is protective of her students and employees, even when their safety conflicts with Schicksal’s interests. She refuses to abandon Kiana over her Herrscher identity, promises to help Bronya’s injured legs, and repeatedly offers Welt protection because she believes he is a persecuted researcher 9 14 88 115.

She strongly opposes treating Valkyries as disposable tools. When discussing Anna’s flight from danger, Theresa regards it as an ordinary frightened person’s reaction rather than something inherently shameful. However, Otto’s question about how she would handle Anna’s future transformation into a Herrscher leaves her unable to offer an easy answer 348.

Her pride centers on being an adult, an academy principal, and an S-rank Valkyrie. Teasing about her height, childish voice, or combat record quickly makes her defensive. She exaggerates her achievements and sometimes protects her dignity at the expense of sound judgment, most notably when a pride-driven quiz answer costs her two years of lifespan 8 14 99.

Theresa also places considerable trust in diligent staff and students. Her investigation of possible academy spies clears both Welt and Fu Hua in her own mind, leaving her shocked when Fu Hua’s connection to Otto is exposed 18 19.

Abilities & Skills

Oath of Judah

Theresa’s principal combat asset is the Oath of Judah, also called Judas: the Eleventh Divine Key, created from the Herrscher Core of Binding 15.

• Golden chains: Uses Judah’s chains to restrict an area and pursue an opponent 15.
• Automatic defense: Judah intercepts Sirin’s initial Void Lance without Theresa needing to move 15.
• Honkai Energy tracking: Recalls Judah after it detects her location, allowing her to escape from the water 15.
• Heavy strikes: Wields Judah directly as a crushing weapon. During the Sky-Piercing City rescue, she destroys a large boulder with one blow 369.
• Incomplete mastery: Has not fully unleashed Judah’s power. Her defeat by Sirin occurs before she can activate Zero Nominal Power, while Raven later criticizes her habit of using the Divine Key like a brick 15 29 180.
• Reliance on the weapon: Losing access to Judah causes a major reduction in her fighting strength 64 69 88.

Vishnu Factor and Clone Physiology

Theresa possesses the Vishnu Factor, but its potential remains largely undeveloped 70 239.

• Extended lifespan: Her lifespan exceeds that of ordinary humans 14.
• Fixed physical development: Her body has remained in a twelve-year-old form 14 376.
• Restricted potential: Her power is described as sealed or restricted, and she has not developed Vishnu’s immense growth potential 70.
• Known risk: Mobius explains that sufficiently developed Vishnu power can overwhelm the human brain and erode the user’s sense of self. Theresa is not shown reaching that stage 239.

Tactical Misdirection

Theresa can exploit rival factions rather than confront superior forces directly 76.

• Redirecting enemies: Broadcasts Durandal’s location over a public channel so Anti-Entropy will intercept her, buying Kiana’s group time to pursue Wendy 76.
• Authority limits: Cannot simply order a deployed S-rank Valkyrie to abandon her mission. Her standing also does not allow her to stop Schicksal’s response to an intrusion at headquarters 76 290.

Field Command and Rescue

Theresa takes direct command during emergencies, assigning technical work and rescue duties while handling combat threats 139 369.

• Boarding defense: Orders Einstein and Bronya to recover control of the Hyperion while she leads the Valkyries against approaching mechanized forces 139.
• Survivor evacuation: Rescues Jian Yun, checks her breathing, arranges emergency treatment, and directs troops to search for additional survivors 369.

Equipment / Weapons / Items

• Oath of Judah / Judas — Her primary Divine Key and long-standing combat partner. Theresa describes their shared campaigns across Siberia, Western Europe, and the Far East Branch with considerable affection 69.
• Ring of Divine Grace — Produces a temporary adult appearance; Theresa keeps it as her first system reward and uses it again after a height-reduction punishment 7 8 99.
• Concept Card: Shed the Golden Cicada’s Shell — Allows escape behind an apparently dying decoy. Its thousand-mile relocation is potentially hazardous because the destination is unspecified 130.
• Hannah Stigmata — Receives the same Stigmata as the other participants after Elysia persuades the system to reward everyone 37.
• Elysia’s book on communicating with Chakravartin — A quiz reward whose altered title promises cremation, alarming Theresa rather than reassuring her 37.
• Golden Humo King / Anti-Kevin Armament Model Ninety-Nine — Enthusiastically requests the model from Vill-V, who agrees to give it to her 190.
• Humo manga and dolls — Collects both. A wrong quiz answer costs her half her dolls; she later prepares to sell collector’s merchandise to cover Himeko’s unpaid wages 111 298.

Relationships

• Kiana Kaslana — Niece and student. Theresa is willing to oppose Otto for her safety and rebukes him for addressing Kiana as “K423,” insisting that her origin as a replica does not diminish her personhood 73 295.
• Otto Apocalypse — Grandfather, financial patron, and source of deep conflict. Theresa recognizes his affection and ability but fears his schemes and rejects his willingness to harm her students. Otto regards her as the successor he personally raised 17 49 295 316.
• Himeko Murata — Teacher and frequent teasing partner. Their arguments involve Theresa’s maturity, Himeko’s drinking, and overdue pay; Theresa eventually pledges to settle her wage debt 49 68 298.
• Raiden Mei — Student whose cooking Theresa values highly. Theresa offers to help when Mei is punished with cleaning the entire academy 7 269.
• Bronya — Student whom Theresa promises to help regain the use of her legs. Bronya also regularly challenges Theresa’s exaggerated claims and impulsive behavior 14 99.
• Fu Hua — Trusted model student whose exposure as Otto’s spy initially feels like a betrayal. Theresa later notices and worries about changes in her mood and attendance 18 19 273.
• Welt — History teacher whom Theresa mistakenly believes needs protection from Cocolia. She promises him safety, a raise, and recognition as a trusted aide, unaware of the significance of his concealed identity 88 100 115 327.
• Wendy — Former academy standout whom Theresa recommended for the Gem of Desire experiment. Theresa apologizes for the resulting paralysis and later worries about Wendy’s changed behavior and training 74 85 336.
• Durandal — Fellow S-rank Valkyrie. Theresa avoids genuinely sparring with her, while exposing her location to Anti-Entropy creates a serious dispute between them 66 76.
• Kallen — Offers to care for Theresa as her own daughter after Otto’s departure, initially mistaking her childlike body for evidence that she is underage 376.

Story Role / Major Arcs

Theresa Virus and Project Ring

The system identifies Theresa as the answer to a question about who destroys the world, then displays a ruined city populated by infected Theresa copies. These beings assimilate others instantly through their glowing gaze; Higokumaru is shown becoming another copy 55.

• Separate setting: The outbreak belongs to the displayed Project Ring world, not a demonstrated transformation of the main Theresa 55 56 65.
• Unknown origin: The group speculates about the cause and Schicksal’s post-Otto leadership, but no culprit is established 55.
• No demonstrated countermeasure: Bronya proposes studying Theresa for antibodies, but this remains a suggestion rather than a successful treatment 56.
• Dungeon recurrence: Kiana later receives a punishment requiring her to survive for a day in Theresa’s Great Escape, fleeing hordes of Theresas through the ruined Project Ring city 128.

Notable Quotes

“Fine. For Kiana’s sake, I’ll fight Grandpa if I have to!” 73

“Grandpa! Even if Kiana is a replica, she’s a complete person now, with her own friends and family! Calling her by a number is going too far!” 295

Trivia

• Theresa favors bitter melon juice and offers it to Danzhu during her visit to St. Freya 49 168.
• Elysia and Eden believe she has the potential to become an idol. Theresa rejects the idea because she considers it incompatible with her dignity as principal and S-rank Valkyrie 101.
• “Theresa the Peerless Strategist” is a title she wants to display in her office, but the system explicitly rules it an incorrect description of her Second Honkai War performance 14.