-True Name: Tanya Degurechaff
-Title: The Devil of Rhine, Eleventh Goddess, Ace of Aces
-Other Qualifying Classes: Caster, Archer, and Berserker
-Alignment: Lawful Evil
-Weapons: American-Model Tommy Gun
-Crossover: Youjo Senki: Saga of Tanya the Evil
-Summoning Relic: Elinium Type 95 Operation Orb
N. Phantasm: A
-Magic Resistance (B): Cancel spells of B-Rank or below.
-Riding (B): Tanya used the 'Empire Flying Gear' to allow her to traverse into the air and is specialize in air combat.
-Battle Continuation (B): Makes possible to fight even with deadly injuries and can remain alive so long as one does not receive a decisive fatal wound.
-Charisma (A): At just nine years of age, Rider enters the Empire's Mages Division and is promoted to Second Lieutenant. Her talents, efficiency, and ruthlessness makes her an asset for the Empire and a threat on the battlefield.
-Clairvoyance (C): Capable of keeping track of fast-moving object within a range of four kilometers.
-Divinity (C): Using the Elinium Type 95 Operation Orb and praying to God (also known as "Being X"), she gain an increase power-up due to the device having remnants of 'divinity' in it.
-Eye of the Mind (True) (B): Capable of calm analysis of battle conditions even when in danger and deduce an appropriate course of action after considering all possibilities to escape from a predicament. So long there is even a 1% chance of a comeback, this ability greatly improves the chances of winning.
-Manipulator (A): Due to her extremely dangerous cuteness and small size, she can easily fool someone by using her skills e.g during her short conversation with previously ranked Captain Maximilian Johann Von Ugar by persuading him to drop in the selection of being one of the Twelve Knights during War College Arc. Also she has an ability to fool anyone by her voice, e.g in light novel, manga, and anime version (Episode 5) where she used her child voice during the bombing of Dacian Capital.
-Military Tactics (A): Although she has an average record in planning and strategy, she has a special aptitude for analysis and critical thinking skills. Moreover, she can manipulate the plan according to her will. When Tanya gives orders to her subordinates, they can expect harsh punishments if they fail to comply.
-Projectile (Firearms) (B+): The ability to enhance the effectiveness of firearms. Used magic to enhance her bullets that could exploded from impact.
-Elinium Type 95~Prayer of Words
*Type: Anti-Unit (self)/ Anti-Army
*Effect: Developed by Adelheid von Schugel and his team. It uses 4 cores as opposed to using only 1 like normal models do. The Type 95 that affect Rider eyes to turn yellow while her physical and mental psyche increases beyond the extent of a normal human. Moreover, she has medium accuracy in shooting but is able to cast multiple spells with no problems, also allowing her to reach an altitude of 18,000 feet and cast a high tier powerful explosive spell that could destroy a whole company. A single shot of her high tier spell is able to be called an equivalent of a nuke, while said attack ignores conventional durability (Disposes of oxygen in a very widespread area as a bonus effect). Thanks to Existence X Tanya is the only person in the world who can safely use the Type 95 by praying to "God" or "Being X". However it is fragile should it be harmed or destroyed, with a very high chance of exploding.
N. Phantasm: A++
- Imperial Army 203rd~Air Mage Battalion
*Effect: Rider can summon forth her personal Wing Battalion "V601", to which is codename "Pixie Battalion". It consists of 48 active men with powerful Type 97 Elinium Orb that is capable to fly more than 8,000 feet above sea level and match Tanya's firepower and mana's efficiency. To the regular magi and weak human, these wraith-like familiar might pose a threat, but they are hardly powerful enough to defeat a powerful Servant. What they lack in strength, they make up in numbers, which can threaten weaker Servants.