The Minor Robot is an enemy in Mother 3 found in the Thunder Tower. It can throw bombs, use electric attacks and fire a DRoW-Z Beam (this beam causes sleepiness), but will eventually run out of power and become unable to move. If there is also a Battery Man in the battle, the Battery Man may jump inside the Minor Robot when it begins to run low on HP. This will restore its ability to move, and heal it fully.

Its battle sound is Battle Sound 24 which falls under Code Numbers 508 for regular attack, 509 for Smaaaash! and 510 for Miss.