Christopher Columbus manifests as a Rider-class Servant in Fate/Grand Carnival, extending his portrayal from Fate/Grand Order. He appears as an elderly man with thin white hair and beard visible beneath his hat, frequently displaying a distorted, toothy grin. His attire reflects naval captains of the Age of Exploration, featuring a coat, tricorn hat, and boots. His appearance evolves across ascensions, integrating plundered Native American artifacts and golden Christian iconography in later stages. His personality emphasizes greed, selfishness, and an unwavering pursuit of profit. This reflects his historical background of the 1492 Atlantic crossing and subsequent exploitation of indigenous populations through enslavement, rape, and plunder. As a Servant, personal gain remains his core motivation. Despite this, he exhibits formidable determination and eloquence, enabling him to inspire others and secure patronage through charm and deception. He encourages persistence in achieving goals regardless of ethical implications. In Fate/Grand Order's Agartha chapter, summoned with amnesia, he adopts the alias "Rider of the Resistance." He manipulates men into joining a fabricated resistance against Agartha's matriarchal societies, claiming to fight oppression. His true objective is conquering Agartha to enslave and sell its female population. This deception involves establishing a base at the Peach Blossom Spring, where he murders Helena Blavatsky and recruits soldiers under false pretenses. He allies with Ritsuka Fujimaru's party to advance his ambitions, coordinating attacks on locations like Ys and the Nightless City. During the assault on Ys, he expresses disgust at Pirate Princess Dahut's hedonism but participates in her overthrow. He later mobilizes forces against Wu Zetian's domain, prioritizing tactical advantage and resource exploitation until confronting Penthesilea and Megalos. His relationships highlight pragmatic amorality. He collaborates with pirates like Edward Teach or Francis Drake for mutual profit, though they resent his prosperous death. Interactions with James Moriarty and the Queen of Sheba focus on potential financial schemes. His interest in Captain Nemo's submarine and Osakabehime's origami reflects utilitarian desires for efficient exploitation. He mocks Himiko's perceived wealth in Zipangu (Japan), underscoring his material fixation. His Noble Phantasm remains unusable during the Agartha Singularity due to amnesia. Abilities include bolstering party attack and Noble Phantasm damage, self-preservation via Guts status, and enhancing critical hit potential. Passive skills feature Magic Resistance and Riding proficiency. Post-Agartha gameplay mechanics include bond-dependent bonuses to party bond points and combat enhancements against Rider-class enemies. In Fate/Grand Carnival, he features as part of the ensemble cast. His inclusion stems directly from his established Fate/Grand Order portrayal.