The Proton is an enemy from Geometry Wars: Retro Evolved that carried into the following sequels. They resemble a blue circle in the First game of the series. A blue pentagon with multiple layers in the second game of the series. Finally, a blue atom-like model, or a sphere with a particle orbiting around it in the third game.
Behaviour[]
When a Gravity Well[2] explodes, a swarm of protons will be summoned. These protons are very hostile
When these protons are summoned, they will chase the player at a high speed until they either collide with the player or are shot to death. These enemies die in one hit unlike the Gravity Well. Although it is faster than the player's ship, the proton isn't very accurate in it's path of flight. This helps the player escape it and have more time to kill the protons. In the first two sequels, the proton is small compared to other enemies, but in the third it is about the same size as the rest because of the particle orbiting around it.