Air (Enemy)

The Air enemy is a flying unit that can pass by most towers in the game. They appear in small groups, but have more health and speed than most enemies.

Appearance
It is a light blue circle with multiple layers and shading of the same shape, looking like layers of cake. On top of it are four blades, spinning rapidly as the enemy moves across the path.

Strategy
Air enemies aren't anything exceptional, with their only specialty being able to keep out of the reach of 7 of the game's 12 towers. They have one major weakness, and it doesn't take a detective to figure it out: Air towers. Not only do they deal more damage than the average tower, they also can ignite their enemies, dealing a portion of the enemies maximum health as damage. Air units will not last long when this burn damage is applied, so having just 2 Air towers at the midpoint of the game can deal with these enemies without trouble. Air enemies are still affected by freezing enemies, and can also be hit by Teslas for full damage. They take reduced damage from Missile and Minigun towers, but once again, Air towers should handle them fine. in the second game they ae vulnerable to splash towers

Trivia

 * in the second game they can be hit by splash towers