Selene

"Activating Aggressive Maneuvers"

- Selene's pre-battle catchphrase Selene (セレネ, Serēne) also known as Project Epsilon (プロジェクトイプシロン, Purojekuto Epusiron), is the fifth Automaton created, though, much like Hyperion, was in the making before Asterion, and is considered one of the strongest Automatons created by Eva Kiesler.

Trivia

 * Selene's appearance is based off of Chachamaru Karakuri from Mahou Sensei Negima!.
 * Despite technically being genderless, Selene is considered female due to her overall appearance.
 * In Greek Mythology, Selene is the Goddess of the Moon and is considered the personification of the moon.