Yes they are. Well androids to be exact. From the Mega Man X series. X, Zero, and Vile are Reploids (technically X and Zero aren't Reploids due to the fact that X and Zero were made before Reploids existed. Reploids were designed based off of what Dr. Cain could analyze of X's systems. Zero was uncovered in the ruins of an old lab much like X.) Reploids (and X, and Zero) are machines capable of thought, and acting on their own. Vile is a Maverick, which is a Reploid gone insane and X and Zero were Maverick Hunters.
In short here is the wiki page about Reploids in the Mega Man X series.
http://megaman.wikia.com/wiki/Reploid