Laser Hunter

The Laser Hunter (レーザーハンター) is a robot deployed by G.U.N. in Sonic Adventure 2 and Sonic Adventure 2: Battle. Instead of bullets, they fire lasers, hence the name.

Sonic X
The Laser Hunter made an appearance in the anime Sonic X. Following Perfect Chaos' attack on Station Square, the Laser Hunters were build by G.U.N. to combat the growing threat of Doctor Eggman, after having being giving clearance to being constructed from the President. In this continuity, their laser color is green rather than blue.

The Laser Hunters were first seen sent to halt Eggman from entering the room where Shadow wasbeing held, resulting in its destruction, along with numerous Beetle series robots. Several other Laser Hunters were seen in the defense of the G.U.N base, though most, if not all, were gunned down by Eggman.