Rule 34 - 16:9 3 Fingers 3d (artwork) Alien Alien Humanoid Ambiguous Gender Athletic Athletic Humanoid Athletic Male Balls Being Watched Bungie Circumcised Claws Clothed Clothed/nude Clothed Ambiguous Clothed Ambiguous Nude Male Clothing Combine Advisor Cybernetics Cyborg Deep Throat Digital Media (artwork) Duo Duo Focus Erection Fellatio Finger Claws Fingers Genitals Gesture Glistening Glistening Body Glistening Genitalia Glowing Glowing Eyes Grabbing Head Grey Body Grey Skin Group Half-life Halo (series) Hand On Head Hand On Leg Hand On Thigh Hi Res Humanoid Inviting Leaning Leaning Forward Leg Grab Levitation Licking Long Tongue Looking At Another Machine Male Male/ambiguous Margevonn Microsoft Muscular Muscular Humanoid Muscular Male Nude Nude Humanoid Nude Male Oral Penile Penis Penis Lick Pink Tongue Robotic Arm Sangheili Science Fiction Sex Small Mouth Source Filmmaker Standing Standing Sex Tentacle Tentacle Tongue Thigh Grab Threesome Invitation Tongue Tongue Out Tongue Wrap Tongue Wrapped Around Penis Tonguejob Valve Video Games Voyeur Widescreen Xbox Game Studios