When manifested, Heracles has the same appearance as he normally does in the Berserker class. As he continues to battle, his elbow protrusions begin to grow into a number of spikes and similar protrusions begin to grow on his body.
The Berserker Class Card is the last of the standard Class Cards to be found, located inside a building with a barrier much smaller than that of previous Class Cards. Miyu Edelfelt tries to fight it alone, but becomes completely overwhelmed by Berserker after she manages to kill him once with Gae Bolg. Installing the Saber Class Card is able to allow her to fight him back and strike with Excalibur, but it proves ineffective in fully killing him. Illya arrives before Berserker can finish Miyu off, and while Rin and Luvia briefly hold him down, Miyu and Illya use Kaleid Install with the Saber Class Card to finish him off.
While Heracles' Axe-Sword is present in the Include function of the Class Card, the manifested Heracles does not posses it, instead only using his fists to fight and God Hand to revive. God Hand is ranked down and only blocks against attacks C-rank and below. It still is able to resurrect him and nullify attacks that have previously harmed him.
Including the Class Card grants Nine Lives in the form of Berserker's large axe-sword. Normally a style of martial arts that was adapted from his bow and arrow used to slay the hydra, it can be used with any weapon. The martial art of the Noble Phantasm has been lost, so only the sword is deployed.
The Berserker Class Card has yet to be Installed by anyone, but it would grant Heracles' ability at the cost of removing the user's reason due to Mad Enhancement. Normally an "excellent Heroic Spirit in every aspect", the Installation leaves on a "monster who destroys the enemy in front of one's eyes and without reflecting on one's body." While the user gains God Hand, the Installation deteriorates it in various ways and leaves it with a fewer stock of lives than normal.
Nine Lives: Shooting the Hundred Heads: Rank Unknown
A gigantic axe sword created from broken rock. Originally was a bow and arrow set that destroyed the nine headed giant serpent and then developed as a martial art adapted so it can be used with any weapon and sublimated into a style. This style is said to be the Noble Phantasm; however, the martial art was lost so only the sword is deployed.
The bow and arrow set Black Gil used was this Noble Phantasm's prototype. It was a nine laser automatically guided Phantasmal Species killing fake-ish ability
Mythical great hero XXXX's ability is obtained. A truly excellent Heroic Spirit in every aspect but this class's specialty "Mad Enhancement," robs the user of his reason, only leaving a monster who destroys the enemy in front of one's eyes and without reflecting on one's body just goes into battle, wouldn't you say?
God Hand: Twelve Labors: C
Immortality obtained from the blessing of gods. It should be called a kind of curse rather than a Noble Phantasm. One's body is converted to a strong armor and C rank and below attacks are completely nullified.
Also upon death, revive is automatically cast. Original stock was 11 however, because installation has deteriorated the ability in many ways, the stock seems fewer.
Additionally, it becomes resistant to the damage received so the same attack cannot kill him again.