Fog

The Fog is a tank similar to the Storm although it and it's created projectiles are invisible, It also becomes invisible even while moving.

Design
The fog look like the Storm, except the barrels have smaller black rectangles on them, halfway through the barrel.

Technical
The Fog and its bullets are invisible to all AIs and bosses, even whilst moving, like VPN.

Upgrades
Fog upgrades from the and the  and does not upgrade any further.

As the Fog

 * Most bosses won't see you, however some AIs will fire when you hit them.
 * Use the low penetration in obstacles where they can bounce around.
 * Aim for bosses, unless you can't penetrate their shields.



Against the Fog

 * You can still see fog, it's just 80% transparent, so use a high reload (or high speed, damage) tank to take it out

Trivia

 * The fog is one of the only tanks that stay invisible to bosses at all times.
 * Though it has a unknown bug that stops the ability from working.
 * This bug is now fixed, however.