Believing Shirou to be an ordinary human, to preserve the secrecy of the Holy Grail War, Lancer silences Shirou by stabbing him through his heart. During his fight with Archer, Lancer noticed that Shirou Emiya had witnessed his entire battle. He has Lancer go out on reconnaissance, and scout the locations and identies of other Masters and gauge how dangerous their Servants are. Kirei chooses to employ a passive strategy regarding Lancer. Lancer is disgruntled at having to serve a Master who uses such cowardly tactics, but he is forced to obey Kirei's wishes. Despite his wishes to avenge his fallen master, Lancer was forced to bend to Kotomine's will. He then used her stolen Command Seals to gain the allegiance of Lancer and enter into the 5th Holy Grail War. However, Kirei Kotomine betrayed Bazett and severed her left arm to obtain her Command Spell, leaving her almost dead. Lancer was originally summoned by Bazett Fraga McRemitz, an Irish representative of the Mage's Association. When he is with Shirou, he wears a tight white shirt and black pants, and when he's in contact with Bazett Fraga McRemitz, he wears a white collared long sleeved shirt with a black tie, black vest, black pants and shoes, and a black apron. He also wears these clothes when fishing. In Fate/hollow ataraxia and Carnival Phantasm, when not in battle, he wears his casual clothes which consist of a hawaiian shirt with light green, lime, red and orange flaming patterns, black pants and brown shoes. When he's in battle he wears blue Irish myththology style outfit and carries a red spear. Lancer has dark blue swifted back hair tied it into ponytail, red eyes and wears sliver gray earrings.

He enjoys fishing, hunting (although not seen doing it) and hitting on cute girls, but is quick to work himself into a frenzy during a heated battle. He has a playful attitude and takes a very carefree approach to life. The proper use is as a throwing weapon and has such piercing power that it has only been stopped, at great cost, by Archer utilizing Rho Aias.

When its name is called, it reverses cause and effect to strike the opponent's heart without fail. His Noble Phantasm is GГЎe Bolg, a cursed lance that inflicts wounds that do not heal. He once tells Shirou that he also could have been summoned as a Berserker class because of his savagery. However, above all, he is best known for keeping his word. With his heroic exploits, CГє Chulainn acquired a reputation of savagery in battle, though he was a well-meaning and courageous young man. CГє is the Irish Gaelic word for 'hound.' During CГє Chulainn's expedition to the Land of Shadows in Scotland, he trained under a sorceress named ScГЎthach and acquired his signature weapon, the cursed javelin, GГЎe Bolg. Although born with the name SГ©tanta, he adopted CГє Chulainn after killing the hound of a smith, Culann, and promising to replace the slain canine while another was reared. He is a demigod, the offspring of a mortal woman, Dechtire, and the deity, Lugh. Lancer is CГє Chulainn, a hero from the Ulster Cycle of Irish mythology.

Fate hollow ataraxia lancer