The UNS Tunguska was a triangular Battleplate, and is in fact the first Battleplate seen within Schlock Mercenary. Only ever seen under the command of General Xinchub, it served as his flagship up until his capture by the Toughs. Little is known about "Gus", the AI of the Tunguska, except for his nasty sense of humor; the same goes for his apparent superior, Admiral Gracie. The Tunguska was destroyed by the Pa'anuri in the Zoojack system.
- Given the naming conventions of battleplates, it is likely that the UNS Tunguska was named after the 1908 Tunguska event.