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Xeno Fenner is a foreman aboard the Hitei Kan.
When his complaints about bad working conditions for the Hitei Kan's crew keep being ignored, Fenner calls for a work stoppage, stopping short of calling a strike.
To discuss a problem with fuel processing that is gravely hampering travel, Fenner is asked to a meeting with President Roslin. Fenner becomes frustrated that his prior meeting requests and pleas for worker needs and benefits are ignored while the Fleet's leadership will only summon him when fuel supplies are threatened. After quoting a passage from Gaius Baltar's underground book, which infuriates Roslin, Fenner is thrown in the brig.
Expecting this, Fenner had ordered his crew to sabotage the refinery machines by removing the pressure seals, should he not return.
After some heated persuasion by Chief Tyrol, who visits him in the brig, Fenner gives out the location of the pressure seals, allowing production to resume. Fenner is then released from his cell and returns to his foreman duties. Fenner's experience with a balky conveyor comes in handy later on, but a new worker is injured in the repair, prompting Tyrol to re-assume his role as a union leader and stop refinery work with less subtlety than Fenner (Dirty Hands).
After the discovery of Earth and the assassination of the Quorum of Twelve, Fenner is appointed as Hitei Kan's representative to the new Quorum and begins the motion to strip Galactica of her parts and disperse them among the fleet (Islanded in a Stream of Stars).