The New York native graduated from Carnegie-Mellon and studied under John Houseman at the American Shakespeare Festival in Stratford, Connecticut. He also furthered his training as a company member of the Arena Stage and at the prestigious American Conservatory Theatre in San Francisco. In 1968, he made his NYC stage debut as the Fool in "King Lear" and within two years had won a Tony Award supporting Katharine Hepburn in the musical "Coco" (1970). Despite achieving success in TV, Auberjonois has periodically returned to Broadway, usually netting a Tony nomination for his work, as in Neil Simon's "The Good Doctor" (1973), paired with Bob Gunton as the Duke and the King in "Big River" (1985), Roger Miller's musicalization of "Huckleberry Finn", and more recently, as the studio chief modeled on Samuel Goldwyn in the Tony-winning "City of Angels" (1989-90).
On the big screen, Auberjonois debuted in Robert Rossen's "Lilith" (1964) before joining Altman in a series of films that has included "M*A*S*H" (1970), "McCabe & Mrs. Miller" (1971), and "The Player" (1992). He cast in the all-star disaster film "The Hindenburg" (1975), as Burgess Meredith's traveling companion. Other film roles of note include a foppish appearance in "Police Academy 5: Assignment Miami Beach" (1988), as Dr. Burton in "Batman Forever" (1995), and as Prof. Artemus Bradford in the live-action feature "Inspector Gadget" (1999).
The small screen has also provided a wide range of roles for the gifted actor. In 1971, he made a guest appearance in an episode of "Night Gallery" before landing a supporting role in "Once Upon a Dead Man" (NBC), the TV-movie pilot for "McMillan and Wife". Auberjonois played Edgar to James Earl Jones' "King Lear" (PBS, 1974) and made his miniseries debut in "The Rhinemann Exchange" (NBC, 1977). He played the very formal Captain Sir David Edney in two "The Wild Wild West" (CBS) reunion TV-movies in 1979 and 1980 and earned an Emmy nod as the famous Washington Irving character Ichabod Crane in "Once Upon a Midnight Dreary" (CBS, 1979). Other notable appearances have included as Merlin in "A Connecticut Yankee in King Arthur Court" (NBC, 1989) and as a gay man in "The Lost Language of Cranes" (PBS, 1991).
Post-"Deep Space Nine," Auberjonois' credits included a recurring role on the CBS drama "Judging Amy" as Judge Jackson Keeler; a guest spot as a human character on a 2002 episode of UPN's "Trek" spin-off series "Enterprise"; a turn as James Callender in the specualtive historical telepic based on Thomas Jefferson's relationship with a female slave, "Sally Hemings: An American Scandal" (2000); portraying Prof. Buonragazzo in Disney's live-action musical TV production of "Geppetto" (ABC, 2000) opposite Drew Carey and "Trek" regular Brent Spiner; and playing a reverend in Roland Emmerich's American Revolution drama "The Patriot" (2000) opposite Mel Gibson and a pastor in the dark, generational comedy "Eulogy" (2004). The actor returned to series television on David E. Kelley's law drama "Boston Legal" (ABC, 2004 - ) in a recurring role as the wary legal ace Paul Lewiston, this time co-starring opposite "Trek" legend William Shatner.
Auberjonois has also become a specialist in voice work for animation, starting with the voice of the evil Dr. Braxis in 1985's syndicated "Challenge of the GoBots". He is perhaps best recalled as the French cook Louis in the big screen "The Little Mermaid" (1989) and Professor Genius in "Little Nemo: Adventures in Slumberland" (1990). His other regular TV voices have included Nefir Hassanuf on the Saturday morning version of "Aladdin" and his other credits include "The Adventures of Batman & Robin," "Justice League," "Richie Rich," "The Savage Dragon," "The Legend of Tarzan" and several video games, including voicing Odo for various "Star Trek" products.
Auberjonois and his son Remy-Luc, appeared in a memorable 1988 episode of NBC's "L.A. Law", in which Remy portrayed the neglected progeny of a busy corporate executive who sued his father for abuse in an attempt to gain some attention. His daughter Tessa is also an actress.