Chiester 45 (シエスタ45 Shiesuta Yonjūgo ) is a weapon in contract with Beatrice, 45 has a very methodical and timid personality, and her persecution complex is somewhat strong. This makes her compensate well for the weakness of 410's rough personality when they work as a pair. Since she cannot stand silence, she sometimes becomes emotionally insecure if she isn't always being ordered by someone. 45 has excellent capabilities in searching for the enemy and deciding orders. The sisters' battle power is multiplied by her support.
Ougon Musou Kyoku
- Lady MARIA - original owner
- EVA-Beatrice - master
- Goldsmith - master
- Chiester Sisters Imperial Guard Corps - member of
- Like the other Chiester sisters, 45 is named after a firearm round, the .45 Colt round.
- In the anime episode 16, when Chiester 45 prepares to hit, there are a number of Russian phrases of all things, seemingly taken from a Russian-Whateverlanguage phrasebook ("Здравствуйте" - "Hello", "Желаю счастья" - "Wish you luck/happiness", "Жду вашего ответа" - "Waiting for your response", "Как Ваше здоровье" - "How is your health" and a good number of others).