Also known as: 異星の巫女
An unknown alien entity seen throughout the second story arc of Fate/Grand Order. She is a silver-skinned woman who never says anything. She can speak, but her language is completely alien to humans and cannot be deciphered. Her presence cannot be discerned by human technology, as if she is a living void. Her true nature is that of an observational terminal utilized by both Olga Marie Animusphere and Maris Chaldeas to monitor Chaldea throughout the events of Cosmos in the Lostbelt.
Character Design: Yamanaka Kotetsu
Voice Actress: Yonezawa Madoka