|“||Do you want to live or die? We have to choose one of them.||„|
|~ Sieg attempting to persuade his fellow homunculi to rebel|
Sieg (ジーク, Jīku) was originally one of the nameless homunculi produced by the Yggdmillenia to supply power for their Servants, he managed to escape with Astolfo's help, going on to develop his own identity. While he is almost killed by Gordes, Siegfried, desperate to uphold his dream to be a Hero of Justice, sacrifices himself to save him, implanting his heart into his chest. Grateful for the new life he was granted, Sieg names himself in his honor and works with Ruler to save his fellow homunculi and end the Great Holy Grail War.
Powers and Stats
Tier: 9-B | 7-A, higher with Balmung | At least 7-A, likely higher
Age: Only a few months old, though mentally older
Classification: Homunculus, Pseudo-Servant, Dragon
Powers and Abilities: Superhuman Physical Characteristics, Magecraft, Energy Projection, Matter Manipulation (By analyzing the structure of an object, he can change it to make it more brittle), Transformation (Can transform into Siegfried using Dead Count Shapeshifter Command Spells) | Superhuman Physical Characteristics, Expert Swordsman, Energy Projection with Balmung, the Armor of Fafnir negates most attacks and ranks down those that can actually hurt him, Electricity Manipulation (Can use the electricity produced by his nerves as energy), increases in strength and durability when fighting a dragon, Soul Manipulation (All Servants can consume souls to replenish their magical energy), Immunity to conventional weapons, Regeneration (Mid-Low; all Servants have regenerative capabilities) | Flight, Energy Projection, can travel to the Reverse Side of the World
Attack Potency: Wall level (He would've killed Gordes with his magecraft had he not blocked it) | Mountain level (Duplicates Siegfried's strength, allowing him to match and slightly wound Karna), higher with Balmung (An A+ Anti-Army Noble Phantasm, matched Clarent Blood Arthur, and by using it over and over again rapidly, he can match Brahmastra Kundala and even temporarily delay Vasavi Shakti) | At least Mountain level, likely higher (As a dragon, he should be stronger than most Servants, and dragons are said to be capable of razing countries with their breath).
Speed: Peak Human (Gained a much stronger constitution and body due to Siegfried's heart) | Massively Hypersonic (Can keep up with Karna and Mordred) | Massively Hypersonic
Lifting Strength: Unknown | Unknown | At least Class 50 (Carried the Greater Grail to the Reverse Side of the World).
Striking Strength: Wall Class | Mountain Class | At least Mountain Class, likely higher
Durability: Wall level | Mountain level, higher with the Armor of Fafnir (Nullifies most attacks and even Noble Phantasms, and reduces the damage of the things that can hurt him, such as Karna's blows, to just minor wounds). | At least Mountain level, likely higher
Stamina: Peak Human. | High. Other Servants can fight for nearly an entire day without stopping.
Range: Extended melee range with his sword, further with magecraft | Extended melee range, Kilometers with Balmung. | Extended melee range, much further with dragon breath.
Standard Equipment: Astolfo's sword, gains Balmung when transforming into Siegfried.
Intelligence: Due to being kept inside a storage tank for most of his life, Sieg is somewhat clueless, naive, and single-minded. While much more logical and intelligent than Astolfo, he is socially inept and unaware of world history and proper manners. However, he is able to quickly absorb information from his surroundings over the course of days, being able to pass for a somewhat eccentric but ultimately normal human being during that time and learning how to use magecraft, Command Spells, and convince his fellow homunculi to rebel upon realizing that there is nothing binding him from learning and making these choices. As Siegfried he gains all of his sword technique, knowledge, and experience of the original, but cannot initially perform at his best due to needing time to get used to his power. Afterwards, he is able to match Karna in one-on-one combat and through his mastery of Berserker's Galvanism manages to surpass Siegfried in the aspect of his Noble Phantasm use.
Weaknesses: Sieg only has three Dead Count Shapeshifter Command Spells, each lasting only three minutes. Due to his young age, he is somewhat naive and inexperienced, and the dragon blood in his heart is slowly killing him, while Fafnir attempts to kill him in his dreams. | Armor of Fafnir has a weakness, a leaf-shaped mark on his back that cannot be covered, allowing even minor attacks to deal severe damage to him. Wounds dealt to this part of his body are extremely difficult to heal, as well. Armor of Fafnir is also negated by dragon slayers, or weapons with dragon slaying anecdotes. Its effectiveness is also reduced if he blocks blows with Balmung.
Notable Attacks / Techniques:
Straße/Gehen: A magecraft instinctively embedded into Sieg's Magic Circuits that enable him to enact his wish for the destruction of an object. In his first use, he analyzed the structure of the glass tank containing him, allowing him to modify it so that it'd be as brittle as old wood. When using it against Gordes, it manifested as a powerful blast of energy that would've destroyed Gordes' arm and punched through his chest to consume his heart.
Dead Count Shapeshifter: Dragon Revelation Command Spells: Three special black Command Spells that Sieg developed after receiving Siegfried's heart, allowing him to take the form of the Heroic Spirit Siegfried for a maximum of three limits. In this state, Sieg perfectly replicates Siegfried's parameters, experience, technique, personal skills, and Noble Phantasms.
Armor of Fafnir: Blood Armor of the Evil Dragon: The invulnerable body of a dragon that Siegfried gained by bathing in and swallowing the blood of Fafnir. It dyed his skin brown and continues to circulate through his body, affecting his organs. His skin, comparable in strength to the strongest steel, negates all attacks, physical or magical, B-rank or below, making it impossible for many Servants to harm him at all. It requires A-rank attacks to wound him, but their damage is lowered considerably, with the power of a B-rank attack subtracted from their values. This turns all A-rank attacks into the equivalent of E-rank attacks, inflicting only minor damage that is quickly regenerated.
Against Noble Phantasms, its defensive properties are equivalent to B+ rank, but it is negated by Noble Phantasms used by antiheroes, dragon slayers, and weapons with dragon slaying anecdotes. The armor's defensive properties are also reduced when he blocks blows with Balmung, and due to this Noble Phantasm, he has lost his Magic Resistance skill. He also has a leaf-shaped mark on his back where a linden leaf stuck during his bathing, so the blood did not touch there, leaving that location vulnerable. A conceptual curse prevents him from ever covering it, opening up a hole in anything that would conceal it. Should he be struck there, even the weakest Servant could slay him, and it is incredibly difficult to heal if it is wounded. While this weakness is extreme, Siegfried's skill makes it so that there are few who could land a blow on his back without resorting to assassination.
Balmung: Phantasmal Greatsword, Felling of the Sky Demon: Siegfried's golden greatsword, glowing with such magnificence that it seems to have been created by inhuman hands. It has the traits of both a holy sword and a demonic sword, and will change attributes depending on the nature of who wields it. As a weapon that slayed a dragon, it deals extra damage to those with the blood of dragons. By holding the sword above his head, Siegfried can call upon the magical energy stored within a jewel at Balmung's hilt, True Ether, causing his blade to glow with a twilight aura. Siegfried then can release this energy as a wave of destruction, a semicircle of twilight centered around him.
It has an incredibly fast activation rate for an Anti-Army Noble Phantasm, but Sieg's use of it is slower than in life. However, he uses Galvanism to great effect, maximizing his magical energy and allowing him to use Balmung many times consecutively. In life, Siegfried was even faster, as his heart was transformed into a Magic Core by the process of drinking and bathing in a dragon's blood. This allows him to use it again and again, potentially matching far greater Noble Phantasms by using it many times consecutively. However, as a Servant, this trait of his has degraded and his rate of fire is thus greatly reduced.
Disengage: The ability to break away from combat. Siegfried's A-rank in this skill allows him to reset the conditions of a battle to what they were at the beginning, on top of forcibly removing some of his negative status effects.
Dragon Slayer: A special skill granted to those who have slain dragons, granting Siegfried a 30% boost to his strength and durability when battling a dragon or those with the blood of one.
Galvanism: The perpetual motion power of Frankenstein's Bridal Chest, which resuscitated the dying Sieg. It converts the electricity generated by his nerve impulses into magical energy, granting him even greater reserves of energy than the original Siegfried.
Golden Rule: Throughout history and mythology, individuals destined to amass vast fortunes and treasure are identified as possessing Golden Rule. In Siegfried's case, he gained the riches of the Nibelung, but its curse has ranked down his Luck.
Key: Sieg | Dead Count Shapeshifter | Fafnir