Known for movies

Short Info

Date Of BirthFebruary 1, 1954
SpouseEileen Mumy
FactWrote a screenplay back in the late 1970s in which the Lost in Space (1965) family would have found their way back to Earth. 20th Century Fox was committed to the project, but series creator Irwin Allen wasn't interested in reviving the series. The plan dissolved completely after the death of space patriarch Guy Williams in 1989.

William “Bill” Mumy, Jr. is an American actor, musician, singer, songwriter, and comedian. He is best known for his roles as Lennier in the science fiction television series Babylon 5 and as Will Robinson in the television series Lost in Space. He has also appeared in a number of films and television series, including The Twilight Zone, The Fugitive, Star Trek: The Next Generation, and Criminal Minds.

Mumy was born in San Gabriel, California, on February 1, 1954, to Muriel Gertrude (née Brown) and William Edward Mumy, Sr. He has two siblings: a sister, Amy, and a brother, Christopher. Mumy was raised in a musical family; his father was a big band musician and his mother was a singer. He began playing the guitar at the age of six and soon began writing his own songs.

Mumy’s first acting role was in the television series The Twilight Zone, in which he played the role of Billy Batson in the episode “The Mighty Casey.” He also appeared in an episode of The Fugitive. In 1965, he played the role of Will Robinson in the television series Lost in Space. The following year, he appeared in an episode of Star Trek: The Next Generation.

In the early 1990s, Mumy began working on Babylon 5, a science fiction television series. He played the role of Lennier, a member of the Minbari race. The series ran for five seasons and was very popular with fans.

In recent years, Mumy has appeared in a number of films and television series, including Criminal Minds and The Big Bang Theory. He has also released several albums with his band, The Lennie Niehaus Quintet.

Mumy is married to Eileen Ryan and they have two children: Sean and Emily.

Mumy has a net worth of $3 million.

General Info

Full NameBill Mumy
Date Of BirthFebruary 1, 1954
Height1.7 m
ProfessionScreenwriter, Musician, Voice Actor, Pitchman


SpouseEileen Mumy
ChildrenLiliana Mumy, Seth Mumy
ParentsMuriel Gertrude Mumy, Charles William Mumy, Sr.


Music GroupsBarnes & Barnes, The Jenerators, The Be Five
NominationsDaytime Emmy Award for Outstanding Music Direction And Composition
MoviesIt's a Good Life, Dear Brigitte, Bless the Beasts and Children, Twilight Zone: The Movie, Rascal, Papillon, A.I. Assault, A Child Is Waiting, Sunshine Christmas, Hard to Hold, A Ticklish Affair, Holly Hobbie and Friends: Surprise Party, Comic Book: The Movie, The Bolt Who Screwed Christmas, Captain ...
TV ShowsBabylon 5, Space Cases, Lost in Space, TVography

Social profile links


1[Of Jonathan Harris]: Well, yeah. I never really had too many uncomfortable moments working with any actor. I was comfortable working with most everybody. It's just the more that Jonathan and I did together, the more he changed the character. He really changed the character of Dr. Smith himself. He really turned him from a snarling saboteur villain to this bumbling insulting kook. The more he played it for comedy, the more Irwin Allen liked it. The show really went the way that Jonathan led it. But we had great chemistry together, and we never had a bad day. We were always prepared, as was Bobby May who was inside the robot. When we had our work to do - and I think this is a very big reason the way it went - they'd get us done in a couple of takes. Nobody screwed up. It was easier for the crew and it was easier for us, and people seemed to like it.
2[on his on- and off-screen chemistry with Jonathan Harris, who played Dr. Zachary Smith]: Oh, he just loved Dr. Smith. He loved him when he was such a snarly villain, and he loved him when he was a lovable buffoon. He created that character, single handedly, and no, I don't think he had any trouble being a nasty, villain kind of a character. He was a versatile actor, and loved doing it. I loved Jonathan very much, he was a great friend.
3[on being more than an actor]: I'm very lucky to work in so many different arenas of the entertainment industry and I do enjoy them all, but making music - original music - in the studio or live onstage is definitely my favorite thing to do.
4I'd been working quite prolifically, for about five or six years before we started Lost in Space (1965). One week, I'd be a scary mutant in The Twilight Zone (1959) and, another, I'd be a nice little kid in a Disney movie.
5[Before Lost in Space (1965)]: From the age of four, I was a huge comic fan and still am. When Lost in Space came along it was like being in a huge comic so we jumped at the chance of being part of that project and it proved to be a good choice.
6[When asked about real-life sibling rivalry between his actor-children, Seth and Liliana] "...If my kids could wish each other into the cornfield, as it were, they'd LIVE there. I mean, they'd be in that cornfield all the time."
7I had a great time doing Lost in Space (1965). With the exception of a couple of days, I don't have any unpleasant memories of the show. The only thing I'm bitter about in a sense is that the show runs constantly in syndication and none of the actors get paid. Nonetheless, I made a lot of money at the time, my family invested it well for me, and I have a lot of nice things. I can't complain.


1Credits Jonathan Harris as his favorite acting mentor/best friend.
2Lifelong friend of Jonathan Harris.
3Revealed that he had a wonderful working relationship with Jonathan Harris on Lost in Space (1965).
4He is of German, English, Scottish, and French-Canadian descent.
5His acting mentor and former series' lead, Jonathan Harris, passed away on November 3, 2002, at age 87.
6His acting mentor was the late Jonathan Harris.
7Along with Cloris Leachman, he is one of only two actors to appear in both The Twilight Zone (1959) and its second television revival, The Twilight Zone (2002).
8Best known by the public for his role as Will Robinson on Lost in Space (1965).
9'Weird Al' Yankovic' was a big fan of Lost in Space (1965) growing up, and he and Mumy later became good friends. Mumy reportedly introduced Al to his wife Suzanne.
10Credits his Lost in Space (1965) co-star Guy Williams with inspiring him to become an actor. Mumy grew up watching Williams on Disney's Zorro (1957) TV series; young Bill broke his leg attempting to recreate one of the show's stunts in his bedroom.
11Is an only child.
12Was a lifelong friend of James Stewart, with whom he co-starred in the film Dear Brigitte (1965). The Stewart and Mumy families knew each other well off-screen, Stewart's wife Gloria having been Mumy's Sunday school teacher. He can still do a perfect imitation of Stewart's voice, one that frequently cracked Stewart up during his lifetime. They were all members of the Beverly Hills Presbyterian Church.
13On the Babylon 5 (1994) episode "Eyes," he used his album title "Zabagabee" as an alien word. Series show runner J. Michael Straczynski was reportedly not amused, as he didn't feel it was appropriate to promote outside projects, and it ran counter to his mandate forbidding improvisation on the show.
14Was the original choice to play "Eddie Munster," in the cult 1960s TV series The Munsters (1964). However, his parents did not approve of the makeup young Bill would have to wear for the role; they turned it down. Butch Patrick ended up playing the part. Today, Patrick and Mumy are very good friends and sometimes collaborate on music.
15Wrote a screenplay back in the late 1970s in which the Lost in Space (1965) family would have found their way back to Earth. 20th Century Fox was committed to the project, but series creator Irwin Allen wasn't interested in reviving the series. The plan dissolved completely after the death of space patriarch Guy Williams in 1989.
16Acted in a recent episode of the newly-revived The Twilight Zone (2002) TV series with his actress-daughter Liliana Mumy. As a child, Mumy appeared in three of Rod Serling's classic The Twilight Zone (1959) episodes ("Long-Distance Call", "It's a Good Life" and "In Praise Of Pip") during the 1960s.
17Had a recurring role as "Lennier" on Babylon 5 (1994). Mumy had also repeatedly tried to land a guest role on Star Trek: Deep Space Nine (1993), but the producers always wanted him to play an alien. He held out until they allowed him to play a human, which he did in the DS9 episode "The Siege of AR-558" (he was the Starfleet engineer who worked on trying to decode a Dominion communications array).
18Performed with Robert Haimer as "Barnes & Barnes", recording the hit novelty song "Fish Heads" in 1978. It is currently the most requested song in the history of the Dr. Demento Show.
19Last name is pronounced "Moomy" not "Mummy"
20Father of Seth Mumy and Liliana Mumy
21Wife, Eileen Mumy, is a childbirth instructor.




Space Command2016
Transformers: Rescue Bots2014TV SeriesVigil
Bravest Warriors2013-2014TV SeriesRalph Waldo Pickle Chips Mr. Tezuka
Ben 10: Ultimate Alien2011TV SeriesAgent Bryson
The Bolt Who Screwed Christmas2009ShortKnob Ratchet (voice)
Holly Hobbie and Friends: Christmas Wishes2006Video shortBud Morris / Judge #1 (voice)
A.I. Assault2006TV MovieMajor Heath
Crossing Jordan2006TV SeriesPaper Shredder Operator
Holly Hobbie and Friends: Surprise Party2005Video shortBud Morris (voice)
Comic Book: The Movie2004VideoBill Mumy
The Twilight Zone2003TV SeriesAnthony Fremont
What's New, Scooby-Doo?2003TV SeriesHarry Noze
Buzz Lightyear of Star Command2000TV SeriesEon
Babylon 51994-1998TV SeriesLennier
Star Trek: Deep Space Nine1998TV SeriesKellin
Diagnosis Murder1998TV SeriesParker Craddick
The Weird Al Show1997TV SeriesDelivery Guy
The Monkey Prince1997VideoSam (voice)
Underground Adventure1997VideoSam (voice, as Billy Mumy)
Space Cases1996TV SeriesFerna Herna
Three Wishes1995Neighbor
Batman: The Animated Series1995TV SeriesThe Fox Warren Lawford
The Ren & Stimpy Show1994TV SeriesDr. Brainchild
Animaniacs1994TV SeriesThe Farmer
Ultraman: The Ultimate Hero1993TV Series
Superboy1991-1992TV SeriesTommy Puck
Double Trouble1992/IBob
Dr. Demento 20th Anniversary Collection1991Video as Art Barnes
The Flash1991TV SeriesRoger Braintree
Captain America1990Young General Fleming
Matlock1988TV SeriesDr. Irwin Bruckner
Alfred Hitchcock Presents1985TV SeriesSupermarket Clerk (segment "Bang! You're Dead!")
Barnes & Barnes: Ah A1984ShortArt Barnes
Hard to Hold1984The James Roberts Band - Keyboard
Barnes & Barnes: Soak It Up1983ShortArt Barnes
Twilight Zone: The Movie1983Tim (Segment #3)
Barnes & Barnes: Love Tap1981ShortArt Barnes
Barnes & Barnes: Fish Heads1980ShortArt Barnes
Fish Heads1980Short uncredited
Sunshine Christmas1977TV MovieWeaver
ABC Saturday Comedy Special1976TV SeriesLarry
Sunshine1975TV SeriesWeaver
The Rockford Files1974-1975TV SeriesTrask / Nick Butler
Sunshine1973TV MovieWeaver
Insight1971TV SeriesStan
Bless the Beasts & Children1971Lawrence Teft
Here Come the Brides1970TV SeriesSimon Bill
Lancer1969TV SeriesAndy Cutler
Rascal1969Sterling North
Wild in the Streets1968Boy (uncredited)
Lost in Space1965-1968TV SeriesWill Robinson
The Two of Us1966TV MovieChris Williams (as Billy Mumy)
Vacation Playhouse1966TV SeriesChris Williams
I Dream of Jeannie1965TV SeriesCuster
Bewitched1964-1965TV SeriesDarrin the Boy / Michael
Ben Casey1965TV SeriesVictor Chase
The Virginian1965TV SeriesWilly
The Munsters1965TV SeriesGoogie Miller
Dear Brigitte1965Erasmus 'Ras' Leaf
The Adventures of Ozzie & Harriet1964TV SeriesBilly
Walt Disney's Wonderful World of Color1962-1964TV SeriesFreddy Gray / Petey Loomis
The Eleventh Hour1964TV SeriesBarry
The Fugitive1964TV SeriesDavid Taft
The Greatest Show on Earth1963TV SeriesJeff
Palm Springs Weekend1963'Boom Boom' Yates
Perry Mason1963TV SeriesMiles
The Twilight Zone1961-1963TV SeriesYoung Pip Anthony Fremont Billy Bayles
A Ticklish Affair1963Alex Martin (as Billy Mumy)
Empire1963TV SeriesFreddy
A Child Is Waiting1963Boy Counting Jean's Pearls
Wagon Train1962TV SeriesToddy
The Jack Benny Program1962TV SeriesLittle Boy Who Weighs Himself
Going My Way1962TV SeriesMark Murdock
The Alfred Hitchcock Hour1962TV SeriesTony Mitchell
Wide Country1962TV SeriesDavid Bennett
Alcoa Premiere1962TV SeriesSkipper
Have Gun - Will Travel1962TV SeriesLittle Boy at Carlton Hotel
Dr. Kildare1962TV SeriesJeffey
The Dick Powell Theatre1962TV SeriesLarry
Alfred Hitchcock Presents1961-1962TV SeriesMickey Hollins / Jackie Chester
General Electric Theater1961TV SeriesBuzz
Father of the Bride1961TV Series
The New Breed1961TV SeriesBilly
Tammy Tell Me True1961Neil Bateman (uncredited)
The Loretta Young Show1960-1961TV SeriesJimmy Harrison / Rennie
The Law and Mr. Jones1960TV Series
National Velvet1960TV SeriesWilly
The Wizard of Baghdad1960Aladdin (uncredited)
The DuPont Show with June Allyson1960TV SeriesJoey Robertson
Wire Service1957TV SeriesKidnapped Boy


The Twilight Zone2002TV Series story by - 1 episode
Roswell Conspiracies: Aliens, Myths & Legends1999TV Series 1 episode
Lost in Space Forever1998TV Movie documentary
Space CasesTV Series writer - 14 episodes, 1996 - 1997 creator - 2 episodes, 1996 written by - 2 episodes, 1996 story - 1 episode, 1996
The Fantasy Worlds of Irwin Allen1995TV Movie documentary
Fish Heads1980Short as Art Barnes


Derailroaded2005Documentary performer: "Fish Heads" / writer: "It's a Hard Business", "Fish Heads", "The Bouillabaisse", "Frank", "It's a Money World", "My Sweet Little Cathy", "Ping Pong Ball Head', "Music Business Shark"
Backstory2000TV Series documentary writer: "Series Theme"
The Simpsons1996TV Series writer - 1 episode
Dr. Demento 20th Anniversary Collection1991Video performer: "Fish Heads" - as Barnes / writer: "Fish Heads" - as Barnes
Plain Clothes1987as Billy Mumy, "YOU'RE RICH"
Lost in Space1965-1967TV Series performer - 4 episodes

Music Department

Backstory2000-2001TV Series documentary composer - 4 episodes
Lost in Space Forever1998TV Movie documentary arranger: end title music
On the Edge of Black and White2008Documentary composer: additional music / composer: theme music


Fish Heads1980Short as Art Barnes


Lost in Space Forever1998TV Movie documentary co-producer


The Fantasy Worlds of Irwin Allen1995TV Movie documentary creative consultant


Under the Smogberry Trees2016DocumentaryArt Barnes
Earl Hamner Storyteller2015DocumentaryHimself
The Actor's Journey2011Video documentaryHimself
The Actor's Journey for Kids2011Video documentaryHimself
Pioneers of Television2011TV Mini-Series documentaryHimself / Student on Romper Room / Will Robinson in Lost in Space
Starz Inside: The Face Is Familiar2009TV Movie documentaryNarrator (voice)
Biography1995-2009TV Series documentaryHimself - Narrator / Himself / Himself - Host
On the Edge of Black and White2008DocumentaryHimself
Look, Up in the Sky! The Amazing Story of Superman2006TV Movie documentaryHimself
The 100 Greatest TV Quotes & Catchphrases2006TV Mini-Series documentaryHimself
Twilight Zone: The Definitive Edition Interviews2005Video documentary shortHimself
Ringers: Lord of the Fans2005DocumentaryHimself
Child Stars: Then and Now2003TV Special documentaryHimself
Child Stars: Their Story2000TV Movie documentaryHimself
Boom! Hollywood's Greatest Disaster Movies2000Video documentaryHimself / Host
Attack of the 50 Foot Monster Mania1999TV Movie documentaryHimself / Narrator (voice)
Thanks a Million: The Dick Powell Story1998TV MovieHimself - Narrator
Lost in Space Forever1998TV Movie documentaryHimself
Leonardo DiCaprio: A Life in Progress1998Video documentaryNarrator (voice)
Space Ghost Coast to Coast1997TV SeriesHimself
The Fantasy Worlds of Irwin Allen1995TV Movie documentaryHimself / Host
Howard Stern1995TV SeriesHimself
The Steven Banks Show1994TV SeriesHimself
Apollo 13: The Untold Story1992DocumentaryHost
The Howard Stern Show1990TV SeriesHimself
People Are Talking1990TV SeriesHimself
Social Security in Action1958TV SeriesHimself

Archive Footage

The Sixties2014TV Mini-Series documentaryWill Robinson
Cinemassacre's Monster Madness2012TV Series documentaryTim (Segment #3)
Biography2000TV Series documentaryWill Robinson
Babylon 51995TV SeriesLennier
Lost in Space 25th Anniversary Tribute1991Video documentaryHimself
Saturday Night Live1980TV SeriesArt Barnes
Walt Disney's Wonderful World of Color1973TV SeriesSterling North
Bewitched1965TV SeriesMichael


Nominated Awards

1992Daytime EmmyDaytime Emmy AwardsOutstanding Music Direction and CompositionAdventures in Wonderland (1992)

Source: IMDb, Wikipedia

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