|This character exists primarily or exclusively within the Sonic the Comic continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Hulko-Droid was a robot built by Slimy.
Slimy unleashed the Hulko-Droid on a local village, hoping to win Robotnik's favour. However, the Hulko-Droid was defeated when Tails (whom Slimy had earlier shrunk with a reducing ray) got through a gap in the robot's armour and pulled out its wiring from the inside.