Glass Booster

 is a Tier 5 Tank that upgrades from Booster at level 60.

Design
The has identical guns to the Booster, but its body is hollow like that of the Glass Smasher or a Donut projectile. Unlike the Glass Smasher, it has no shell allowing you to see right through it and see the grid below it.

Technical
Like the Glass Smasher, it does not take knockback.

Trivia

 * This and Hollow Earther are the only Knockback Immune Tanks that have ranged weapons. The others are either Lancers or Smashers.