After Sonic the Hedgehog managed to defeat Eggman in their previous encounter, the doctor disappeared. However, his robot forces remained and continued to attack without a leader. Among these robots were the Antons. Eventually, the Hoverbys came under the control of Neo Metal Sonic, who made them and their fellow Badniks more cohesive. (StH: #1, #7)
The Blaster is based on a Beetle.
Basically, the Blaster is a mindless and silent drone programmed to follow its leader's every command. As such, when left without a leader to follow, it becomes directionless and only able to cause harm by accident. Under a guiding force however, it is a cold and merciless machine who carries out their commands without question.
- The Blaster was based on the  in the Sonic the Hedgehog video game series.