Gunner

The Gunner is a Tier 2 tank that is upgraded from the Machine Gun. It does not upgrade further into Tier 3. It replaces its large trapezoid barrel with four small barrels. The Gunner decreases the size of the bullets.

Design and Technical
The Gunner has a circular body with four small barrels. The side two are a bit shorter and twice as thin as the main middle barrels. Its bullets are the smallest in the game, with only about half of the size of Machine Gun's bullets.

The Gunner's Bullet Damage and Bullet Penetration are passively decreased, but the bullet speed increases a good amount. Reload speed is also increased.

As the Gunner
With high Bullet Speed and Reload, players can create hard-to-escape bullet storms that can overwhelm and destroy enemy tanks with ease. This is especially good against slow shooting tanks, as they can't properly counter the Gunner's bullets.

This tank can be good against fast tanks as well because it can be hard for them to dodge large amounts of fast bullets.

It is highly recommended for Gunner players to invest Skill Points into Bullet Damage and Bullet Penetration, as the base Reload and Bullet Speed stats are immense.

Against the Gunner
The Gunner can be easily destroyed by other tanks with a constant rate of fire, as its base Bullet Damage and Bullet Penetration aren't as good as most tanks.The Gunner's reload can help counter some bullets, but the Gunner generally can't counter sniper bullets, so using Sniper classes against the Gunner is a good strategy.

Trivia

 * The Gunner is one of the only tanks, alongside with the Sprayer, that don't upgrade further to Tier 3, but the Destroyer and the Hunter also used to be non - upgradable until recently
 * The Gunner has become a meme in the Diep.io community along with the Hunter, for being 'weak' compared to other tanks.
 * The Gunner's bullet has the lowest base penetration of all tanks.
 * As of July 11th, it is the only tank without a Tier 3 upgrade other than the Sprayer a fellow Machine Gun upgrade.