Nemo is a character from Fate/Grand Order who serves as the captain and core consciousness of the submarine ship Nautilus. Inspired by the classic literary figure Captain Nemo, he appears as a young, composed, and highly capable commander. In the story, Nemo plays a key supporting role as the leader of his crew, guiding the protagonist through dangerous underwater missions and battles. He is calm, dutiful, and protective, embodying the spirit of a captain who puts his ship and companions first.