Fate/Grand Order New Year 2023 Servant is Rasputin
Rasputin, or Kirei Kotomine, is the New Year Servant available for a limited time in the Japanese server for Fate/Grand Order.
Kirei Kotomine Zazhiganiye Angra Mainyu Grigori Rasputin Miyamoto Musashi New Year Servant Grand Order
Source: siliconera.com