each of his fellowship applications in "The Right Stuff", with hers being #13. She is noted for the many mysteries surrounding her character. Season 6 Dr. Gregory House (Hugh Laurie) is a temporary consultant for the Department of Diagnostic Medicine while waiting to be reinstated. He later returns to the position of Head of Department in "Teamwork". Dr. Eric Foreman (Omar Epps) is the temporary Head of Diagnostic Medicine between "Epic Fail" and "Known Unknowns". Dr. Allison Cameron (Jennifer Morrison) returns temporarily to the diagnostic team between "The Tyrant" and "Teamwork". Dr. Robert Chase (Jesse Spencer) returns to the diagnostic team in "The Tyrant". Dr. Remy "Thirteen" Hadley (Olivia Wilde) is fired from the diagnostic team in "Epic Fail" and returns in "Teamwork". Dr. Chris Taub (Peter Jacobson) quits the team in "Epic Fail" and returns in "Teamwork". Season 7 Dr. Eric Foreman (Omar Epps) Dr. Robert Chase (Jesse Spencer) Dr. Chris Taub (Peter Jacobson) Dr. Remy "Thirteen" Hadley (Olivia Wilde) (episode 1, episodes 18–23) Martha M. Masters (Amber Tamblyn) (episodes 6–19) Season 8 Dr. Chi Park (Charlyne Yi) (episodes 2–22) Dr. Remy "Thirteen" Hadley (Olivia Wilde) (episode 3, 21–22) Dr. Jessica Adams (Odette Annable) (episodes 3–22) Dr. Robert Chase (Jesse Spencer) (episodes 5–20, 22) Dr. Chris Taub (Peter Jacobson) (episodes 5–22) Recurring characters Edward Vogler Edward Vogler (Chi McBride) is the billionaire owner of a pharmaceutical firm and, in a season 1 story arc, became the new chairman of the board of Princeton–Plainsboro Teaching Hospital (PPTH), a position he gained through a $100 million donation to the hospital. Vogler sought to reshape PPTH into a testing facility for his firm's new drugs and saw House's maverick ways and blatant disregard for rules and authority figures as a substantial legal and financial liability. When House refused to conform to Vogler's increasingly capricious demands (including an order for House to fire one of his fellows) and even publicly bashed Vogler's company at a press banquet, Vogler gave the board an ultimatum: fire House, or lose Vogler's grant. After losing Wilson from the board, and a last ditch and impassioned motion from Cuddy for the board members to put the hospital's independence ahead of Vogler's donation, the board voted to retain House, therefore losing Vogler and his $100 million. Fox demanded a bad guy to be added to the show, a few months before House went on a Christmas hiatus. Shore opposed