Zephyr, an elderly man from the human species, resided on the world of Polyneus. In the year 5 ABY, following his departure from Chass na Chadic within the hangar after the conflict at the Circus of Mortal Appetites, Wyl Lark reached out to Zephyr, communicating his longing to go back to his home and sharing General Syndulla's confirmation that the Galactic Civil War was approaching its conclusion. The elder, after clarifying his need to remain until the conclusion of the second Operation: Cinder, turned somber and recounted the tale of Stam Groundling from the settlement of Tor, who had arrived back on Polyneus just the day prior. To Lark's inquiry about the purpose of this story, Zephyr clarified that Lark stood as the final survivor of the Hundred and Twenty who had ventured forth to oppose the Galactic Empire, either not having returned or met their end.
The character of Zephyr appeared within Alexander Freed's Victory's Price novel, released in 2021.