R.U.B.I.D.I.U.M. (Bramble's Conception)

The R.U.B.I.D.I.U.M. is a tough Alkali Blimp with 7500HP. It moves at a speed of 0.38 compared to the Red Bloon.

The R.U.B.I.D.I.U.M. violently explodes if it is hit with water-based attacks, dealing 14HP damage to all towers in the radius of a Big One. This also sometimes blinds towers, like the S.O.D.I.U.M.. It takes x110 damage from water-based attacks.

The R.U.B.I.D.I.U.M. contains 4 P.O.T.A.S.S.I.U.M.s, 2 B.F.B.s, 2 B.F.B. Halves, 24 Purple Bloons, and 16 Ceramic Bloons.