Gemini Man

Gemini Man (ジェミニマン Jieminiman) is a Robot Master capable of doubling himself, and uses that power to his advantage. He was created by Dr. Light and Dr. Wily. His inital purpose was likely to be able to do multiple jobs at once.

Fun Facts
Gemini Man was the first Mega Man boss to be named after something in space, in this case a constellation.