Main •
Bret Harrison as Sam "Thesis" Sullivan: A young professional trying to balance the needs of his social life with the pressures of working at the corporate headquarters of TransAlliance Airways. •
Philip Baker Hall as Russ McDonald: Head executive of TransAlliance Airways and one of Sam's bosses. He's lived a wild life in aviation, from Air Force pilot to head of the company, which occasionally comes back to haunt him. •
Eric Christian Olsen as Sully Sullivan: Sam's goofy, carefree and jobless older brother and roommate. • Amanda Loncar as Piper (season 1): One of Sam's friends, whom he has had a crush on since they met freshman year of college. She is also his roommate. In the first season. she was studying to become a doctor. •
Sarah Mason as Lizzy (season 1): One of Sam's friends and roommate. Her job in the first season was a bartender. •
Mimi Rogers as Meryl: Sexually adventurous, she is an executive at TransAlliance Airways, and one of Sam's bosses. •
Joy Osmanski as Darcy: Sam's personal assistant and former student at MIT. She frequently laments that most of her classmates are in space, suggesting she couldn't get security clearance, because a colorful past, which she's hiding from.
Recurring • Ian Reed Kesler as Derek Rene Tricolli: An obnoxious businessman for
Goldman Sachs, who works in the same building and constantly gets under Sam's skin. In the second season, it's suggested that he's
omnisexual. In an episode of the second season, he makes a deal to trade business contacts with Sam, for a night of passion with Darcy; and she readily agrees to him pimping her out. • Howard Miller as DeKeyser: Executive of TransAlliance Airways •
Michael D. Roberts as Hibbert: Executive of TransAlliance Airways ==Development and production==