A ninja , shinobi no mono or shinobi was a spy and infiltrator in pre-modern Japan. Antecedents may have existed as early as the 12th century. Subsequent legends to the contrary, there is little evidence that ninja were assassins.
Key Facts
| Subject | Ninja |
| Category | Mercenary and spy in feudal Japan |
| Reading time | 1 min · Intermediate |
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Reference material for this entry is drawn from the open encyclopedic record, including Wikipedia , available under the CC BY-SA 4.0 license. Images are credited individually beside each photo.