The Orange Bloon is a bloon that can only be found if you pop a 2 reds and a yellow with one dart monkey shot. Then the orange bloon will appear in their place. It takes 25 hits to pop, and it does not spawn anything.
The Orange Bloon Is found when Purple Bloons are popped, and "spawns" a yellow bloon. They move at a relative speed of 3.3, and have a RBE of 5.