a person trained in ancient Japanese martial arts and employed especially for espionage and assassinations to watch other Ninjas secretly usually for hostile purposes.

Generally more trained than the traditional Ninja, unseen by the careful eye of a Ninja. Can be seen as a more elite ninja.
David was certain he was unseen to the naked eye as a Ninja in the night, but little did he know that he was being tracked by a Ninja Spy.
by mad_cat October 21, 2010
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The spy ninjas are Chad wild clay Vy quaint Daniel gizmo and Regina Ginera Their goal is to defeat project zorgo the spy ninjas are good at fighting hackers
I like the spy ninjas they are good fighters
by That epic boi December 3, 2020
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some group acting like they own YouTube and the saved it :/
spy ninjas need to be stopped
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A group of Youtubers: Chad Wild Clay (Real Name: Chris William Chris), Daniel/Exposing Project Zorgo, Vy Qwaint, Regina/PZ4.
Guy 1: Did you hear about #Project Zorgo's Enemy?
Guy 2: No!
Guy 1: It's the SPY NINJAS!
Guy 2: OH NO!
Guy 1: You are Project Zorgo?
Guy 2: RUNS AWAY
by TheBestHacker September 21, 2020
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