Greenbots

The Greenbots are a group that appears in the Sonic X comic series published by Archie Comics. They were robots fuled by green energy and created by Doctor Eggman.

Archie Comics
When Eggman was using the Greenbots to drain energy from power stations, Sonic and his allies confronted the trio of robots, and battled them in an attempt to defeat them. However, Eggman had his robots tap into the power of the Master Emerald, causing them to fuse with Chaos in order to form Chaosbot.Sonic X #25, "Green-Eyed Monster Part I"

Fused with Perfect Chaos, the Greenbots helped Eggman stay in control of Perfect Chaos as it rampaged across Station Square until Super Sonic destroyed the Greenbots and freed Perfect Chaos.Sonic X #26, "Green-Eyed Monster Part II"