Mutineer :  (noun)

1: open rebellion and refusal to obey authorities (especially by seamen or soldiers)

agitator, anarch, anarchist, anarcho-syndicalist, antinomian, arise, brawler, extremist, frondeur, insubordinate, insurge, insurgent, insurrect, insurrectionary, insurrectionist, insurrecto, malcontent, maverick, mount the barricades, mutiny, nihilist, nonconformist, overthrow, rebel, reluct, reluctate, revolt, revolter, revolute, revolution, revolutionary, revolutionist, revolutionize, riot, rioter, rise, rise up, run riot, strike, subversive, subvert, syndicalist, traitor,