StarRunner is the name of Captain Fwiffo's Eluder (which Fwiffo describes as an Eluder-Class Voidship). After the Spathi contingent of the Earthguard force abandoned their moon base, the separate ships functioned as a makeshift base of operations as they migrated from planet to planet. Finally the whole fleet withdrew to Spathiwa except the StarRunner, which became the de facto base of the Earthguard, crewed and captained only by the hapless Fwiffo. Fwiffo and the StarRunner eventually withdrew to Pluto, where the human crew of The Flagship discover him. It is possible for The Captain to convince Fwiffo to join him and his fleet, making the StarRunner an early and useful addition to the fledgling fleet.