Kingprotea is a massive Alter Ego Servant from Fate/Grand Order, originating from the Sakura Five in the Moon Cell setting. She appears as a giant, childlike kaiju-style girl with overwhelming growth ability and immense destructive power. Despite her intimidating scale, she has a gentle, innocent personality and often acts in a straightforward, emotional way. In the story, she serves as a powerful enemy or ally depending on the situation, and her presence emphasizes the contrast between monstrous strength and fragile innocence.