Invisible

Invisible is a new bloon property. Bloons that are Invisible cannot be seen by you, but they can still be detected by towers that are able to see invisible bloons (many, though not all, of these towers may be magic-based, such as the Monkey Apprentice). If Invisible bloons escape, the consequences are the same as they would be if regular bloons of the same type escaped. The only thing that can make it so you can see bloons that are Invisible is the Paintball Monkey.