Merlin Ambrosius is a prominent character in the anime series Fate/Grand Order. Known as the legendary wizard from Arthurian legend, he is a wise and enigmatic figure possessing immense magical power. Often referred to as the 'Magus of Flowers,' Merlin is both a mentor and a guide to the protagonist. He embodies mystery and wisdom, offering crucial support and advice throughout the series. Despite his aloof demeanor, Merlin shows genuine care for humanity, and his actions are pivotal in shaping the fate of the world within the narrative.