Pupil

 is a Tier 5 Tank that upgrades from Switchblade and Flank Builder at level 60.

Design
The has identical front guns to the Switchblade, but it has a Flank Builder-like Builder cannon on the back of it.

Technical
Like the Flank Builder, its blocks are fired backwards before moving forwards to the mouse.

As the

 * You can play this tank like a faster Overbuilder.