the Uranium at full health.
The uranium bloon has 60 hp and holds 2 diamond bloons. it dooms every dart monkey it passes with death in 5 rounds unless the dart monkey has "lead armor" upgrade. it also brings every wooden bloon that passes it half of its health down due to rotting. every round that has one of these or its parents has a little nuclear symbol next to it to prepare your dart monkeys. It is also immune to all forms of glue except bloon liquifier.all other charachteristics are derrived from silver bloon. it is held by a Bloontonium Bloon.