Karen Kohiruimaki from Gun Gale Online: 3rd Squad Jam Betrayers' Choice HD Wallpaper

Four female characters in military-style outfits and helmets stand together. The character in the foreground on the left wears a pink outfit and helmet with rabbit ears. The character next to her wears a green helmet and camouflage uniform. The character in the center wears a black helmet and tactical gear. The character on the far right wears a camouflage uniform and tactical gear.