5_toes alien alien_(franchise) anthro ball_gag barefoot bdsm bondage bound butt chain chained clothed clothing countershade_feet countershading cuff_(restraint) dead_space duo electronic_arts feet foot_fetish foot_focus fully_bound fully_clothed gag humanoid humanoid_feet kneeling male male/male mr_canvas muzzle_(object) padded_room plantigrade predator_(franchise) prison_uniform prisoner restraints science_fiction shackles shared_gag soles straitjacket submissive submissive_male tickle_torture tickling tickling_machine toe_restraints toes visceral_games xenomorph yautja