Shinobi series

is an umbrella term for the central character in a series of video games developed by Sega commonly referred to as the Shinobi series. The name Shinobi is used as a code-name throughout the series to hide the true identity of its bearer. It has been adopted by various characters, most prominently Joe Musashi, the protagonist of the original series of games (Shinobi -- Shinobi III).
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