She may look cute, but she sure packs a surprising punch.
The Cute Bruiser is like the smaller cousin of the Amazonian Beauty. She is improbably strong, able to defeat opponents much larger that herself. Typically a Cute Bruiser has the appearance of a school girl, and often is one, though her actual age may be much older. She may be proficient in martial arts, have super strength, or she could be an android or cyborg. However, there's often no real justification for her strength.
She tends to fight unarmed, though she may use blunt melee weapons, but rarely relies on bladed or projectile weapons.