Overseer

The overseer is a level 3 tank that comes out of the sniper upgrade tree. Upon upgrading the tank, the sniper barrel is replaced with a drone spawner at each end of the tank. It will spawn drones until the maximum of 8 is met. the drones are strong against slow tanks, low DPS tanks, Sniper branch (when up close), Tri-angle class (if your Drones focus on one). It can upgade into a overlord, necromancer, manger, battleship, overtrapper, and factory.