N.I.N.J.A

The N.I.N.J.A. or the Newly Intelligent Navigator Jumping Appearance is a special MOAB-Class Bloon that appears first on Round 50 on the challenge N.I.N.J.A. Spotted on Bloons Tower Defense 10. It moves very slowly. However, every 5 seconds, it puts up a one-second shield that bounces the projectiles right off the blimp and onto the track, damaging nearby Bloons. For half a second after the shield goes away, the blimp becomes invisible. Then it becomes visible again and the cycle continues.