3girls armor assault_rifle azumanga_daioh black_hair blue_armor blush brown_hair copyright_name cosplay crossover derivative_work first_aid_kit gun half-life_(series) half-life_1 hev_suit highres holding holding_gun holding_weapon kasuga_ayumu m16 m16a1 m203 mihama_chiyo multiple_girls power_armor rifle screenshot_redraw

alien blonde_hair blue_eyes bow bullsquid child cloud_hair collar hair_bow half-life half-life_(series) half-life_2 headcrab insect j-e-m-g leash monster partially_colored pet poison_headcrab sachsen sandals signature smile snark walking when_you_see_it

1girl 6+boys absurdres alyx_vance antlion armor artist_name beard blue_eyes cannon combine_soldier copyright_name eli_vance facial_hair g-man gordon_freeman green_eyes gun half-life:_alyx half-life_(series) headcrab highres jeff_(half-life) k.blank larry_(half-life) manhack russell_(half-life) sandwich snark strider