Hitomi's Katana
Energy Katanas are weapons used by Hitomi while she was defending the Sentai Golden Tower. They are likely made of a powerful alloy or infused with Golden City technology, as they are seen easily cutting through Robot Battle Machines without dulling (There is much evidence leading to believe that the material used to make the Katanas is the same material as Meca One's armor). Similar weapons were used on the Cyclone Defender's Bladed Shield.