A maid (French Maid Outfit often included) who knows kung fu. Many ninja maids intentionally cater to the contrast between the image of a helpless, gentle, obedient Meido and an Action Girl in a frilly uniform jumping off the mansion roof and landing her Mary Jane heels squarely in someone's face. May or may not develop a Bodyguard Crush on her master, be they male or female. If said master is very young or sickly, she might tend to be their Mama Bear as well.