4boys alien assault_rifle baseball_cap blonde_hair brown_hair chibi clark_still energy_gun everyone fio_germi grenade_launcher gun handgun hat highres invader_(metal_slug) invader_queen_(metal_slug) kasamoto_eri marco_rossi mars_people metal_slug metal_slug_6 multiple_boys multiple_girls muscle official_art ralf_jones ray_gun revolver rifle sea_worm_(metal_slug) senno_aki snk sunglasses sv001_(metal_slug) tarma_roving underbarrel_grenade_launcher wallpaper weapon