O.O.Z.E.

The O.O.Z.E., or Obnoxious Ornery Zepplin of Evil, is a blimp with 30000 health. It holds 10 S.L.U.D.G.E.s and spawns from T.O.X.I.C.W.A.S.T.E. It first appears on round 133. It looks like a light green M.O.A.B. with a Glue Dissolver with a green tank on top.

Abilities
Sludge Bomb: I know, this is a Pokemon attack, lol. Launches sludge at towers to deal 10 HP damage and poison them. Poison does 3 HP damage every second, but only lasts for 5 seconds. Towers with metal aren't effected by poison, only the initial attack.