Tokugawa Sen

Originating as a princess from a conflicted region in Nippon, she possesses an unexplainable passion for battles, especially those where her forces face near-annihilation.
In LP5, her clan was devastated by youkai tanuki, and she was imprisoned in a dungeon, only to be rescued by Rance.
Following the establishment of peace in Nippon, she embarked on a quest in pursuit of warfare.

Her fervor for combat has earned her the moniker "戦姫" (pronounced Senhime, which means "war princess").

Spoiler

At the climax of the Helmanian Revolution in Rance IX, it was revealed that Sen had become pregnant by Rance. Following the birth of their child, Tokugawa Tone, Sen decided to retire from her life as a warrior and put down her weapon for good.