Grounder

Grounder is a Badnik created by Dr. Ivo Robotnik.

History
After Coconuts blasted himself- with his pieces delivered as a gift- Grounder and his non-identical twin brother Scratch had the task of stopping Sonic. They would have succeeded had they not gotten into an argument, during which time, Sonic left them buried. Scratch and Grounder, along with Coconuts, later appeared at a villians' tryouts, with predictable results. Grounder, but not Scratch, later appeared at a robot bar called Rusty's. (StH: #2, #4 SSS: #15)

During another ill fated attempt at stopping the Freedom Fighters, Coconuts explained that Scratch was able to last, at longest, 16 seconds against Sonic. Grounder and Bat Brain both lasted longer. (StH: #11)

A subsequent battle had Scratch, Grounder, and Coconuts succesfully trap the Freedom Fighters in a virtual reality simulation, but Sonic used the simulation to his advantage and smashed up the simulatyor and the badniks. Shortly therafter, Scratch and Grounder had the task of robbing an art gallery, in an attempt to flush out a spy in Robotnik's organization. Sonic knew what was happening and sent the dumb-bots crashing into a toxic waste dump, where Scratch found a note from the spy, which added insult to injury. (StH: #16)

Scratch and Grounder, along with Coconuts, returned much later as employees in Mammoth Mogul's newly renovated Casino Night Zone. Scratch has a job as the concierge, while Grounder appears to be a chef. Both, along with butler Coconuts, had developed a fear of Sonic, a complete lack of respect for the Destructix and a (possibly greater) fear of Amy Rose. Who could blame them? (StH #187, #188)

Abilities
While Scratch seems to be the brains, Grounder is the artillery - his robot body is filled with accessories, which switch usually in his drill hands with any number of weapons or tools, and stores assorted equipment (commonly, a telephone) in his torso.

Background Information
Grounder was originally a regular in the TV series Adventures of Sonic the Hedgehog, which had many elements featured in the comic before they realized that this was not the right direction.