Which Servant do you think has the most accurate portrayal in the Fate series compared to their historical or mythological origins, and why?

One Servant that stands out to me is Leonidas I from Fate/Grand Order. While his design is clearly stylized for the game, his personality and background line up surprisingly well with historical accounts. In both the game and history, Leonidas is portrayed as a fiercely loyal and courageous king who values honor, duty, and sacrifice—especially in his defense at the Battle of Thermopylae. The way Fate emphasizes his role as a shield for others and his unwavering sense of leadership feels very in line with how he’s remembered in history.