This article defines a wiki-made category or definition to help organize knowledge of the game. As such, it does not necessarily reflect how Ninja Kiwi, or other players potentially consider the topic.
Passive is a damage type introduced in Bloons Tower Defense 3. Passive damage type deals both no damage and no direct influence with bloons. Bloons Wiki represents this damage type with , the upgrade icon for the Bigger Radius in Bloons TD 6. Many attacks with this damage type can have Tower Buffs and/or Bonus Income and its derivatives.
Some attacks deal literally no damage to bloons, but they are only counted as Passive if the same attack has no direct influence on Bloons. For example, Monkey Village's Grow Blocker doesn't count because it harms any type of Regrow Bloon, and instead counts as Normal and Affects Camo . Monkey Village's Radar Scanner additional camo detection buff does, however, as it buffs towers and only affects towers while doing no direct harm to bloons.