Rule 34 Dev - 1boy alien alternate_design bald ben_10 biceps colored_skin double_biceps_pose extra_arms extra_eyes flexing four_arms_(ben_10) full_body grin highres large_pectorals liyamou looking_at_viewer male_focus monster_boy muscular muscular_male pectorals red_skin smile solo standing thighs two-tone_background|21560856993