Herakles/Heracles/Hercules Berserker OBD
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Name: Berserker, Herakles/Heracles/Hercules
Origin: Fate/Stay Night
Gender: Male
Classification: Servant/Heroic Spirit
Age: Unknown
Powers and Abilities: Super speedstrengthdurability, enhanced senses, intangibility (only under a master's command), precognition, regeneration (high-low naturally; high-mid via God Hand), immortality (types 3 and 4), resurrection (11 times, 12 lives in total), reactive evolution
Weaknesses: Insane and mindless, protects Illya at any cost (if she's included in the battle)
Destructive Capacity: Island level+ (was able to counter Archer's Caladbolg II enough so that it wasn't able to take one of his lives , deflected a weakened Excalibur from Saber [Illya posits it wouldn't have been able to take 2 lives, implying it at least passed the threshold to take 1], and was stated to be able to destroy a mountain)
Range: Extended human melee range
Speed: Massively hypersonic+ (able to intercept and counter Archer's Caladbolg II)
Durability: Island level+ (able to tank the remaining energy of Caladbolg II after countering enough of its power with a physical strike to survive the attack, God Hand makes him very difficult to kill)
Lifting Strength: Possibly Class E (he held up the sky in his legend)
Striking Strength: At least Class EJ+ (was able to counter Archer's Caladbolg II enough so that it wasn't able to take one of his lives, deflected a weakened Excalibur from Saber [Illya posits it wouldn't have been able to take 2 lives, implying it at least passed the threshold to take 1], and was stated to be able to destroy a mountain)
Stamina: Tireless till he runs out of mana
Standard Equipment: Nameless Axe-Sword (piece of stone from Heracles' temple infused with Berserker's power)
Intelligence: Relatively mindless but possesses immense battle instincts.
Notable Attacks/Techniques:

God Hand: God Hand is the blessing (curse?) of the gods that grants immortality. It is Berserker's main Noble Phantasm. By turning the body into a robust armor, any attack not exceeding rank B are totally negated. In fighting game terms, you could say it is a super armor that takes no damage from any attack other than a super combo. Only attacks or abilities with mystery equal to an A rank Noble Phantasm attack can harm Berserker. God Hand also resurrects him 11 times, meaning he must be defeated the total of 12 times to be offed for good.Even powerful attacks like Saber Alter's Excalibur blast only took a single life from Berserker. In addition he develops resistance against any ability that managed to bypass God Hand. As such to defeat Berserker one must posses at least 12 different methods to kill him.

Mad Enhancement: The source of the Berserker class's power. Mad Enhancement exchanges sanity for power to make the Servant an unstoppable fighting machine. Usually only weak Servants get summoned as Berserkers but the Einzberns summoned Heracles, one of the greatest heroes in history. For a hero famous for his skill and cunningness its more like a hindrance to lose sanity. To add normally the boost of Mad Enhancement isn't active and his master only turns it on when fighting a serious foe. When active, Mad Enhancement grants Heracles even more greater strength and physical power.

Nine Lives: Nine Lives is the most trusted Noble Phantasm of the Heroic Spirit Hercules. It's not a weapon but a secret technique or skill that changes depending on the weapon and utility. The Anti-Mythical Beast version releases hundreds of dragon-shaped homing beams on the opponent and used to kill the legendary Hydra in the past. Shirou showed an alternate, Anti-Unit form that sends 9 near-instantaneous slices at the opponent. The later had enough power to kill Dark Berserker 8 times before he could react. There are supposed to be a huge variety of forms, even a technique with a shield. Hercules could make a splendid use of that attack if he was any other class than Berserker. The madness made him unable to use this skill consciously though. Still it supposedly reinforces his rock-sword to not let that break from his massive strength.

Notable OBD Victories:

Konoha (Naruto) Outdated
Guts (Berserk) - Guts profile
Ryougi Shiki and Tohno Shiki (Nasuverse) - Ryougi and Tohno's profiles

Notable OBD Losses:

Aqua the Back (ToAru) - Aqua Profile

Other: Not to be confused with the character of the same name from Fate/Zero or the character of the same name from History's Strongest Disciple Kenichi

Alignment: Chaotic Mad N. Phantasm: B
Strength: A+ Agility: A
Mana: A Luck: B
Endurance: A    
Class skills:
Mad Enhancement B
Personal skills:
Battle Continuation A
Bravery B
Divinity A
Eye of the Mind (Fake) B
Noble Phantasms:
God Hand Support B
Nine Lives Anti-Unit ~