Booster

The Booster is a tank that has 2 more barrels behind of the tank. It branches off Tri-Angle, which is a downgrade of Booster because it has 3 barrels, not 5 barrels.

Design
It has 5 barrels. 4 of them behind, each 2 together, and 1 barrel is in front of the tank.

Trivia

 * It's possibly the fastest tank in the game.