User blog comment:Raindrop57/When Raindrops End up in Bloons World.../@comment-5971321-20130131084233/@comment-5294711-20130131114625

If you read its base story, E.N.T.I.T.Y. IS actually a bloon! It was a prototype bloon from the first, original Bloons game.

The Reactor Core form is actually more of a support machine than its true form. Its true form is that of the diamond bloon.