"Lancer, assist Berserker in killing Saber. I command you with the Command Seal."

The air on the battlefield froze with tension.

The Command Seal. An absolute order for a Servant. No matter how great a Heroic Spirit might be he cannot disobey a Command Seal. Consequently, Lancer no longer possessed his free will –

The tip of the red spear reversed direction and attacked, flying towards Saber with a low whistle. The two demonic spears, long and short, brushed past the shoulders of the rapidly retreating Saber one after the other in front of her face, sweeping across the sky.

Lancer used the two spears in his left and right hand to attack the target directly behind him without even turning his head around. This astonishing prowess with the spears, as though the pair could change form at will, is the show of Lancer's true strength. The accuracy of Lancer’s techniques didn’t even invoke his opponent’s rebuke.

- Fate/Zero: Act 4, Part 3