The Leopard-class DropShip Tisiphone was one of six DropShips in service with the mercenary unit the Hessian Horseman in 3059. The Horsemen were commanded at the time by Countess Elsebeth van Tassel, a former Leftenant Colonel in the Armed Forces of the Federated Commonwealth and a noble from Hamilton. During the first half of 3059 the Tisiphone was deployed along with the Hessians in the Deep Periphery, tracking and ultimately defeating the pirate band Corazon's Cossacks in battles on Durham, Isfahan and Labbezanga. The Tisiphone commonly transported the BattleMechs of van Tassel and her Command lance.
- Under the Shadows of the Stars