Lancer

The first hostile Servant to appear in the story. He later changes his mind on killing Shirou and Rin after Gilgamesh appears and he even tries to buy time for them.

Personality
Lancer is a fierce but balanced warrior who enjoys combating a worthy opponent. He has a playful attitude and takes a very carefree approach to life, but is quick to work himself into a frenzy during a heated battle.

Magical Skills
Lancers are hailed as the "Most Agile" of Servant classes. His Noble Phantasm is Gáe Bolg: Spear of Impaling Barbed Death. It is a long, red spear which inflicts wounds that do not heal. When activated, it reverses the laws of cause and effect, meaning that the fact that the next strike will hit the opponent's heart becomes a forgone conclusion, even before the spear is thrust. This causes its next strike to become completely unavoidable and fatal, ignoring all magical and physical protection, bending at impossible angles and around obstacles. The only way to survive this technique is to be blessed with a large degree of luck in order to have the spear strike a region other than the heart, as avoiding the blow is impossible.