Marie Antoinette (Alter) is the Avenger-class Servant version of the historical Queen of France from the Fate/Grand Order series. Born from the king's death and the queen's despair, she embodies a black flower of vengeance, defining herself solely as an avenger. Retaining memories of her original self, she harbors deep resentment and hatred toward everyone, displaying a sarcastic and mocking demeanor. However, her core personality shines through with a longing for human connection; she gossips about servants while feeling sorry for them inwardly. In her adult form, she appears more mature, politely refusing approaches yet secretly hoping for companionship, as seen when she regrets not talking more with the King of the Caves during the Id Singularity. She hates Napoleon intensely and feels jealousy toward her child self, while experiencing discomfort mixed with longing for Amadeus.