Character: dartling gunner
An expensive tower that has a minigun that fires darts. This tower is unique in that they will attack where your mouse is, although the targeting can be changed to attack at a specific spot. The Dartling Gunner can be upgraded with better fire rate, less spread, being able to damage all bloon types, shoot missiles instead of darts, or shoot plasma bullets/lasers.
This tag implicates bloons_tower_defense (learn more).