Ninja

The Ninja is a type of ancient Japanese mercenary that is typically used in various media. Here are various words you might be looking for
 * Ninja (class) - A class in various RPGs that is usually a derviative of the Thief class
 * Ninja Kirby - A copy ability in the Kirby series that gives Kirby ninja-like skills
 * Ninji - An enemy from the Mario series
 * Team Ninja - A developer under Koei Tecmo that is known for the Ninja Gaiden series. Also developed Metroid: Other M
 * Teenage Mutant Ninja Turtles - a franchise based on a graphic novel series that has had several iterations on Nintendo hardware
 * The Legend of the Mystical Ninja - Otherwise known as the Goemon series, a classic series of beat 'em ups from Konami