Rutsubo Kishi, also known as the Crucible Knight in English, is a formidable enemy in the game Elden Ring. He is a heavily armored warrior wielding a sword and shield, often encountered as a boss or elite enemy throughout the Lands Between. Rutsubo Kishi is known for his challenging combat style, resilience, and mastery of ancient Crucible powers. His presence signifies a test of skill for players, embodying the legacy of the Crucible, the primordial form of the Erdtree. He plays a key role as a recurring adversary.