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.