Easily the most dim-witted of Robotnik's henchmen Grounder is amazingly stupid and incompetent failing at almost everything he does He is highly gullible, easily deceived by the simplest or bizarre of Sonic's disguises, and falls for practically any trick
robot body filled with accessories most of which are stored in his arms and can be reconfigured into anything weapons or tools
Grounder is a small short stocky teal robot with tank tracks for feet as well as drills instead of his hands and nose