Info Red Monika:
Red Monika is the femme fatale of the Battle Chasers universe. An improbably voluptuous female bounty hunter, she is a formidable fighter and highly skilled at many forms of combat.

Monika and the main protagonist of Battle Chasers, the legendary swordsman Garrison, knew each other since childhood. At an early age they both shared a natural talent for combat, and when they were children Monika actually had the more advanced skills of the two, first training Garrison in the art of swordsmanship. They also shared a great passion for adventure, but possessed very different moral values: Monika had little regard for the law and felt that personal freedom trumped everything else, while Garrison had a disciplined outlook on life and felt that it was his duty to uphold justice. These differences prevented them from developing a closer relationship as they grew older, and once they reached adulthood they had gone separate ways. Monika, true to her amoral nature, decided to pursue a career as a mercenary, offering her services to the highest bidder. She became known as Red Monika due to her bright red hair, and developed a fearsome reputation as a deadly bounty hunter with killer looks.
Source: wikipedia.org