The goddess of war from Northern Europe, who appears in legends as a central character, is known for her love story with Sigurd (also called Siegfried). Despite not being able to be with him, she caused destruction due to her sorrow. Lancer was the first opponent faced by Manaka Sajyou and Saber. She joined forces with Archer to defeat Saber but vanished during their fight against Rider.
Lancers master knows that she loves Saber as she cries out for her beloved Sigurd. He acknowledges her feelings, but is unsympathetic and just bluntly "tells her the truth."