Seryuu Ubiquitous

Seryu Ubiquitous is a member of the Jaegers and formerly of the Imperial Police, fighting alongside her modified dog Koro, the biological Teigu Hekatonkheires. After her father and mentor were both killed by revolutionaries, she developed an absolute, black-and-white belief that the Empire's authority is righteous and its enemies pure evil — a conviction so unshakeable that she willingly let Dr. Stylish replace parts of her own body with hidden weapons to better enforce it.

Outwardly cheerful and even childlike, Seryu is in truth capable of horrifying cruelty, killing without hesitation anyone she judges to be evil. Her clash with Night Raid escalates the war between the two sides considerably: she mortally wounds Sheele during a mission and later has Koro devour a fallen Night Raid member's body, actions that mark her as one of Mine's most bitter enemies.