Roger Dunbarton is the CEO of Mohican Airways and Frank's (former) boss. He is extremely rich and has a trophy wife named Brandy (who was mistaken by the airline employees as his daughter). He is voiced by Gary Cole.
Frank formally meets Dunbarton at the football game he takes Bill to. While there, Dunbarton seems to take a shine towards Frank, who earned his respect. He says he's sympathetic towards the union's plot, but is actually unfazed to it.
Eventually after solving the strike, Dunbarton was unimpressed with Frank's compassion and fired him on Christmas Eve. After firing Frank, Dunbarton brought in his nephew, former Minor League Baseball player Scoop Dunbarton, as Frank's replacement.
Dunbarton confirms that he has a daughter when he says, "You think I'd fuck something as old as MY DAUGHTER?! I will drown you!"
In the Season 2 finale "Landing The Plane", Dunbarton discovers that Frank was responsible for trying to rid the airport of his nephew. Dubarton then threatens to have him "rot in a dungeon" (i.e. spend the rest of his life in prison) while his kids work at a Cambodian sweatshop to make him cheap clothing that he'll only wear once. However, at that moment, Scoop steps on a bomb suitcase set up by terrorists who attempted to hijack the plane, which led to Scoop being blown up and the laminated newspaper article of him (which he always wears around his neck) stabbing Dunbarton in the neck, killing him almost instantly.