Kariya was unable to surmise the other’s true intentions; he regarded Kirei unabashedly, then glanced with a sigh at his own Servant.

The large silhouette standing behind him was Rider, King of Conquerors, Alexander. Whether it was the crimson mantle or the curly red hair, or the burly physique—everything was the same as the driver of the chariot that had sped out of Fuyuki City with Saber. The only difference was the pair of eerie, blood-red eyes radiating resentment… Undoubtedly, this was a characteristic unique to a Mad Enhanced Servant.

Wrapped in his thickset arms was the slender body of Irisviel, who had lost consciousness and was still in a coma. This ‘Rider’ was the true culprit who had kidnapped the ‘Guardian of the Holy Grail’ from the underground storage that Maiya protected, and had also lured Saber to give chase toward Shinto.

“… That is enough, Berserker.”

Kariya nodded. The large body of the King of Conquerors turned into a pitch-black fog as if burnt, then reverted to the armored figure filled with an ominous air. The dark energy that imitated Rider’s appearance twined about his hands and legs, obscuring small parts of the black armor.

Seeing Berserker returned to his original form, Kirei said as if groaning.

“This sort of transformation ability… It is truly wasted as a Noble Phantasm of Berserker’s level.”

“This guy initially had the ability to transform into many other Heroic Spirits that had won merit in military exploits for other people. Because of the Mad Enhancement, it has been reduced to the ability of ‘imitation’.”

- Fate/Zero: Act 14, Part 3