Teryakin Geiss, originally Teryakin Kalinna, is a human starship crewperson in the League and War Eras. Geiss is a short African with black hair who uses the pronouns she/her.

Geiss was born on the 5th of July, 4368, in Bakhuysen City, Mars.

While working as crew on a salvage hauler out of Paratine, Geiss met, fell in love with, and subsequently absconded with Katherine, the pilot of a light freighter. The pair ran cargo, salvage, and courier jobs in the last decades of the League, living on the ship. During the buildup to the War of 4404, they occasionally delivered clandestine packages for Cara al Vakemeir, the chief of staff for Director Kowalski of the Andromeda Alliance.

During the War, the Geisses were well-employed salvaging the wrecks of ships destroyed in the fighting. This resulted in several close encounters with both Galactic Defense League warships and hostile salvage crews.

In 4407, the duo recovered the gun arm of the Combat Moth Gripen from a wreck and delivered it to the Black Bear Science Institute.

In the far future, Teryakin and Kate Geiss were virtualised crew members on the Expedition Ship Frost Soundbite. This ship was among those that responded to Eyrie Station's recall signal to mark the heat-death of this universe.