This page is a comprehensive listing and detailing of the various characters in the television series House, divided sectionally as appropriate.

WARNING! The following text contains parts of the plot of the series House

The original diagnostic team consisted of Dr. Cameron, Dr. Chase and Dr. Foreman. While both of their tenures had brief interruptions, Chase and Cameron still appeared semi-regularly on the show. They advise the newer fellows in the Diagnostic Department in seasons 4–5, or participate in cases directly when appropriate.

Following the events of the season three finale, House began a long-running competition to select a new diagnostic team, progressively eliminating "contestants" from an original pool of 40 applicants. This story arc ran through the first half of Season 4, from episodes 4-02 to 4-09. His final team consists of Dr. Foreman and the three successful "contestants": Dr. Taub, Dr. Kutner and "Thirteen".

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 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 kowtow, so to speak, to Vogler's increasingly capricious demands (including an order for House to fire one of his fellows) and made a mockery of Vogler's company at a press banquet, Vogler gave the board an ultimatum: fire House, or lose Vogler's grant. After an 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, as well as voting Vogler off the board of directors and therefore losing his $100 million.

Randall Rothenberg is the president and CEO of the Interactive Advertising Bureau, the trade association for interactive marketing in the U.S.

He received an undergraduate degree in classics from Princeton University.

Before joining the IAB in 2007, he was the Senior Director of Intellectual Capital of Booz Allen Hamilton, where he oversaw business development, knowledge management, and thought leadership activities, and directed the award-winning quarterly business magazine strategy+business, Strategy+Business Books, www.strategy-business.com, and other electronic and print publications published for senior business executives by Booz Allen. He has also served as the firm’s CMO.

Prior to Booz Allen, Randall spent six years at The New York Times, as the technology editor and politics editor of the Sunday magazine, the daily advertising columnist, and a media and marketing reporter. For 10 years, he was a marketing and media columnist for Advertising Age.