atalanta_alter_(fate)
A twisted version of Atalanta (fate), altered as a result of the corrupted Noble Phantasm Agrius Metamorphosis. Depicted as a grey, long haired girl with cat ears and boar pelts. She first appeared in concept art for Fate/Apocrypha before being implemented as a Berserker-class Servant in Fate/Grand Order first in the Anastasia Lostbelt.
True Name: Atalanta, the Chaste Huntress
Character Design: Konoe Ototsugu
Voice Actress: Hayami Saori