1980s_(style) alien arm_cannon bronze-d commentary_request concept_art dual_arm_cannons energy_cannon gall_force glint hirodango looking_to_the_side machinery mecha mecha_focus no_humans official_style photo_background retro_artstyle robot science_fiction sketch space starry_background thrusters weapon  bronze-d character_name from_side gall_force looking_ahead machinery matayoshi_(nopple_1000) mecha portrait science_fiction shadow solo white_background