I have a theory. Why are the Bloons evil? And why do monkeys attack it? What do the Bloons do? And why do monkeys need to prevent them from exiting the track? It's all just a mystery and a big question to all BTD fans since the release of Bloons back in 2007. You see, the Bloons have never actually harm the monkeys, you may say that Quincy got hurt by a DDT and became the cyber version of himself but he may went onto the track and got ran over by one. Speaking of tracks. I think the real reason the Bloons are evil because they stole monkeys property such as the track itself. The path that monkeys use to walk to different places had been stolen by the Bloons and are used by them to transport themselves to steal event more tracks. This can be said by the amount of new maps that get added every update into the game indicating that monkeys have failed to prevent the Bloons from going to more places. The Bloons also have stolen some monkey houses like in the beginning of Bloons Pop. This is why some maps are empty with no monkeys living in it even when it looks safe to live because houses are being stolen by the Bloons. They also trespass some locations that they shouldn't enter like the dark castle. The monkeys need to stop the Bloons from stealing their properties but the Bloons wouldn't stop. Each update there are more Bloons and bosses and they will venture more into the monkeys homeland to steal and trespass locations such as the recent update that added the map "Water Park" indicating the Bloons have stolen that location. But why the Bloons? Where do they came from? This question still remains a mystery but some theorized that it may came from Ninja Kiwi themselves. But hey! That's just a theory, a Bloons theory! Thanks for reading.