Riley Martin (May 9, 1946 – December 2015) was a self-described alien contactee, author, and host of The Riley Martin Show heard Tuesdays at Midnight EST on Howard 101.

Kevin Metheny (June 6, 1954 – October 3, 2014) was a radio executive, famously named "Pig Virus" by Howard during his days as Program Director at WNBC. He and his replacement John Hayes were portrayed by Paul Giamatti as a composite character under the name Kenny "Pig Vomit" Rushton in the 1997 movie, Private Parts.

Benjy Bronk (born Sept. 4, 1967) began working on The Howard Stern Show as an intern in 1998. Bronk eventually earned a paid position conducting pre-interviews of show guests and gathering articles for Robin Quivers' news. In 2000, Benjy was given an in-studio seat next to Writers Jackie Martling and Fred Norris, writing on-the-spot jokes for Stern as the show transpired.

Kyle Casey "K. C." Armstrong (born July 17, 1975), who grew up in nearby Suffolk County, New York, began working on the show as an intern in 1997 and later became associate Producer from 1998 to 2004. In a 2005 interview, Armstrong revealed that he had been fired from the show by WXRK general manager Tom Chiusano for lapsing back into drug use after spending time in rehab.

Born in December 1979 in Fairborn, Ohio, Jamie Daniel "J. D." Harmeyer is Stern's head media Producer. He records television shows, pulls clips from the internet and edits together highlights from recent happenings in movies and TV. He attended Full Sail University in Winter Park, Florida.

Robin Ophelia Quivers is a native of Baltimore, Maryland, and first met Stern after being assigned as his newswoman at WWDC in March 1981. She has been his co-host and news reader ever since. She is a former nurse and Captain in the United States Air Force. Quivers briefly left the show towards the end of her time at WWDC when Stern made a deal at WNBC in 1982, and did not realize WNBC initially refused to hire her. Quivers returned to the show at WNBC a month after Stern.

Gary Dell'Abate, aka Baba Booey, serves as the show's head Producer. Hired right after graduating from Adelphi University in 1984 and briefly anglicizing his name to Gary Dell, he has worked for the show ever since. Dell'Abate is mocked on the Stern Show for his appearance, gullibility (he once booked a mentally challenged woman who claimed to be Madonna's sister), and frequent mispronunciations (for Example, insisting that actor Nick Nolte's last name was pronounced "Nolt"). He earned the nickname "Baba Booey" after insisting it to be the correct name of the cartoon character Baba Looey.

Ralph Cirella was paid by Howard TV to be Howard Stern's personal Stylist, a job he previously held for Stern's E! show. Cirella was first hired to construct a "talking penis", for a broadcast at the Felt Forum on New Year's Eve 1986. He has been a listener since Stern's time at WNBC from 1982 to 1985. Cirella did not make on-screen appearances until 1990, when he worked on costumes, special effects and make up on The Howard Stern Show on WWOR-TV. In his book, Miss America, Howard Stern calls Ralph the most universally hated member of his staff. Throughout 2006, Cirella briefly co-hosted the now defunct The Friday Show with Gary Dell'Abate and Jon Hein, on Howard 100 and Howard 101. He was also the host of "Geek Time" which aired on Howard 101.

Billy West provided the show with comedy impersonations, part-time, beginning on November 7, 1988. He was known for his impressions of Marge Schott and show Comedian Jackie Martling. West's final appearance was on November 1, 1995, before he left the show over contract and salary disputes. On February 19 and 20, 2007, a special two-part retrospective of West's work on the show was broadcast on Howard 100 and Howard 101, covering over 11 hours.

Steve "the Engineer" Freid first worked with Ben Stern and later worked with Howard when he arrived at K-Rock. He gained notoriety performing as the character Wood Yi, a parody of actor/director Woody Allen. Billy West came up with the idea for the character in the early 1990s, and Steve was chosen to play the part due to having a similar-sounding voice. When performing as Wood Yi, Steve read lines supplied to him by the shows' staff, reciting them in a deadpan manner.

Gary Garver was a West Coast-based correspondent for The Howard Stern Show who first started working for the show in 1991 when he was an operator at KLSX, the show's Los Angeles affiliate. He was sent to awards shows, movie premieres and television conventions to ask "Stuttering John"-type questions to celebrities and has-beens.

In 1996, the Austin American-Statesman wrote that Scott is "always threatening to quit or on the verge of being fired, he's the show's whipping boy for technical problems". In 2007, Salem made a onetime appearance on tour with the Killers of Comedy, performing stand-up followed by a Q&A session with the audience. Salem is an avid Bowler and has competed in and appeared at several PBA tour events.

John Hayes is a radio executive, famously named "The Incubus" by Howard during his days as Vice-President and General Manager at WNBC replacing Randy Bongarten. He and Kevin Metheny were portrayed by Paul Giamatti as a composite character under the name Kenny "Pig Vomit" Rushton in the 1997 movie, Private Parts. It was Hayes who actually fired Stern from WNBC-AM in 1985 on the orders of NBC network executives. In 2002, Hayes once again pulled Stern's show from CILQ-FM in Toronto. Hayes proudly calls himself "the man who fired Howard Stern twice."

Lange's first appearance on the show was as a guest alongside fellow Comedian Norm Macdonald on January 8, 1998, following a bit involving Scott the Engineer and his challenge to perform 17 complete push-ups. Although appearing with Macdonald to promote the film Dirty Work, Lange had been a fan of Stern since the 1980s when he used to Listen with his father. In fact, after Lange's father was paralyzed in 1987, show Producer Gary Dell'Abate sent Lange an autographed jacket which Lange auctioned off for $2,000 to help support his family.

Scott Einziger is a former Producer of Stern's syndicated Saturday night TV show and E! show. Left the show in November 2001 to become a Producer on The Amazing Race. He has since worked on other reality shows such as Kid Nation, Big Brother, and Are You Hot?. Stern sued Einziger and his production company for ripping off his "The Evaluators" which Are You Hot? mirrored.

Shuli Egar is a Comedian who first appeared on the show in June 2003. When Stern announced his planned move to Sirius and created Howard 100 News in 2005, Egar was an early hire. He was quickly promoted to The Wack Pack beat and also filled in for Lisa G and Steve Langford when they were out. As of 2016, he is the only original member of the Howard 100 News team that remains on staff.

In July 2004, when the show was holding a "Win John's Job" contest following the departure of Stuttering John from the show, Christy won the position as voted by fans. Since joining the show, Christy has become known for his prank calls, song parodies, unique personality, and "show stunts" he's performed with his writing partner Sal the Stockbroker.

Jay Thomas was the host of The Jay Thomas Show on Howard 101 from 2005 until his 2017 death.

Brad Driver is the News Director at Howard 100 News and is responsible for managing the news team. He has held the position since December 2006.

Al Rosenberg was a writer/performer for Howard on WNBC. He did numerous voice impressions including Sue Simmons and Dr. Ruth Westheimer. In The History of Howard Stern, Howard stated that he hired Al after Imus fired him so that he (Imus) could hire his girlfriend to replace Rosenberg. He stayed on at WNBC after Howard was fired because he was still under contract to the station. Al also worked on WNEW-AM radio as one half of the morning team with Bob Fitzsimmons. He also worked with Ted Brown. He later worked again for Howard on the "Channel 9 Show" as a Writer. Al called into Stern's show in 2007 (during a Paul Mooney interview) to discuss Imus' racism. He also appeared on Howard 101's defunct "Miserable Men" program.

Tom Chiusano was the general manager at WXRK, the frequent target of Stern show jokes, and in the later years of the show the master of the "dump button" to prevent content he deemed inappropriate from reaching the airwaves. Chiusano remained at WXRK when Stern and company moved to Sirius, and after several format changes at his station, he eventually announced his retirement in January 2008.

"Reverend" Bob Levy is a standup Comedian who was a frequent on and off air contributor to the Sirius XM radio show from the show's debut until around 2009. He hosted the Miserable Men show and created a series of roasts for Stern show personalities such as Gary Dell'Abate, Artie Lange, and Wack Packers such as Daniel Carver. The placement, frequency and number of plugs given during the Stern show for Levy's off-air efforts was a constant source of tension, especially after the availability of plugs was severely restricted. After Artie's departure, Levy complained on air that some details of the situation were being "covered up" and blamed Howard Stern for the suicide attempt. Levy's departure from the Stern channels soon followed and he is almost never mentioned on the air.

The show left Sirius XM at the end of 2010 and moved to RadioIO Internet Radio and syndicated terrestrial radio.

Abe Kanan is host of The Abe Kanan Show, which aired on Howard 101 weekends and late nights. Kanan's show originates in Chicago. It began as a series of podcasts and was picked up by the Stern channels in February 2011 and lasted until December 2013. He now hosts his own podcast titled "Abe Kanan On Hold".

On September 9, 2013 it was announced by Sirius/XM that he'd been promoted to Senior Vice President of all the Entertainment and Comedy channels.

Mike Trainor joined the show in 2014 as Writer and Producer.

A former co-host with Doctor Dré and Ed Lover on New York hip-hop radio station WQHT-FM, known as Hot 97, Lisa Glasberg, known informally as Lisa G, was an on-air reporter for Howard 100 until February 2015, updating live news headlines each morning and filing reports for hourly Howard 100 news updates. Glasberg is a native of Woodmere, New York.

Ron Tarrant joined the Howard Stern Channels in 2016 from Canada as the Head Imaging/Sound Designer & new voice of the Howard Stern Show/Channels.