Lancer, like most of the other Servants at the Singularity, appears to be mostly insane. She behaves psychopathically, killing people with her eyes, including her Master, and fighting like a vicious beast. She taunts her enemies and has some sense of sarcasm, being very cruel. She has a garden of statues, her victims turned to stone.
Fate/Grand Order -First Order-Edit
Lancer appears in the destroyed Fuyuki, having used her eyes to make herself a garden full of statues of people she killed with her petrifying gaze. She is the first enemy Servant that Fujimaru and Mash find.
After finding them, she shows herself and traps them with her chains, before beginning a fight with Mash after introducing herself. She vastly overpowers Mash and almost kills them before Caster interrupts their battle. He breaks her trap and assumes the fight, and the two begin a fierce clash. When Lancer looks like the one with the upper-hand, Mash pushes Lancer backward with a surprise attack, to which Caster uses his runes to burn Lancer to death
Lancer wields the scythe Harpe. Her fighting style consists mainly of brutally slashing and stabbing at her opponent to wear them out and forcefully break through their defenses.
She also possesses her trademark Mystic Eyes of Petrification. She seems not to actively use this ability in battle.
Aside from these abilities, she also seems to have the ability to transform her hair into both snakes and chains at will. She uses the chains to trap and contain her opponents and transforms them into snakes to attack her adversaries when they try to escape.