| Loretta Young Show
My Own Master
Rennie (as Billy Mumy) | 12/18/1960 |
| Loretta Young Show
The Lie
Jimmy Harrison (as Billy Mumy) | 01/22/1961 |
| Twilight Zone
Long Distance Call
Billy Bayles | 03/31/1961 |
 | Alfred Hitchcock Presents
Bang, You're Dead
Jackie Chester (as Billy Mumy) | 10/17/1961 |
 | Alfred Hitchcock Presents
Bang, You're Dead
Jackie Chester (as Billy Mumy) | 10/17/1961 |
| Twilight Zone
It's a Good Life
Anthony Fremont | 11/03/1961 |
| Alfred Hitchcock Presents
The Door Without a Key
Mickey Hollins (as Billy Mumy) | 01/16/1962 |
| Wide Country
The Royce Bennett Story
David Bennett (as Billy Mumy) | 09/20/1962 |
| Alfred Hitchcock Hour
House Guest
Tony Mitchell (as Billy Mumy) | 11/08/1962 |
| Twilight Zone
In Praise of Pip
Young Pip | 09/27/1963 |
| Perry Mason
Case of the Shifty Shoebox
Miles | 10/03/1963 |
| Greatest Show on Earth
Lady in Limbo
Jeff (as Billy Mumy) | 12/10/1963 |
| Fugitive
Home Is the Hunted
David Taft (as Billy Mumy) | 01/07/1964 |
| Eleventh Hour
Sunday Father
Barry | 01/08/1964 |
| Bewitched
A Vision of Sugar Plums
Michael | 12/24/1964 |
 | Munsters
Come Back Little Googie
Googie Miller | 03/11/1965 |
 | Lost in Space
The Reluctant Stowaway
Will Robinson | 09/15/1965 |
 | Lost in Space
Island in the Sky
Will Robinson | 09/29/1965 |
 | Lost in Space
There Were Giants in the Earth
Will Robinson | 10/06/1965 |
| Lost in Space
My Friend, Mr. Nobody
Will Robinson | 10/27/1965 |
| Lost in Space
Invaders from the Fifth Dimension
Will Robinson | 11/03/1965 |
| I Dream of Jeannie
Whatever Became of Baby Custer?
Custer (as Billy Mumy) | 11/27/1965 |
| Lost in Space
One of Our Dogs Is Missing
Will Robinson | 12/08/1965 |
| Lost in Space
Return from Outer Space
Will Robinson | 12/29/1965 |
| Lost in Space
The Space Trader
Will Robinson | 03/09/1966 |
| Lost in Space
His Majesty Smith
Will Robinson | 03/16/1966 |
| Lost in Space
All That Glitters
Will Robinson | 04/06/1966 |
| Lost in Space
A Change of Space
Will Robinson | 04/20/1966 |
| Lost in Space
Follow the Leader
Will Robinson | 04/27/1966 |
| Lost in Space
Blast Off Into Space
Will Robinson | 09/14/1966 |
 | Lost in Space
Wild Adventure
Will Robinson | 09/21/1966 |
| Lost in Space
Space Circus
Will Robinson | 10/12/1966 |
| Lost in Space
The Android Machine
Will Robinson | 10/26/1966 |
 | Lost in Space
A Visit To Hades
Will Robinson | 11/30/1966 |
| Lost in Space
The Golden Man
Will Robinson | 12/21/1966 |
| Lost in Space
Mutiny in Space
Will Robinson | 02/01/1967 |
| Lost in Space
Rocket to Earth
Will Robinson | 02/15/1967 |
| Lost in Space
Cave of the Wizards
Will Robinson | 02/22/1967 |
| Lost in Space
Revolt of the Androids
Will Robinson | 03/08/1967 |
 | Lost in Space
The Colonists
Will Robinson | 03/15/1967 |
| Lost in Space
Trip Through the Robot
Will Robinson | 03/22/1967 |
| Lost in Space
The Phantom Family
Will Robinson | 03/29/1967 |
| Lost in Space
The Mechanical Men
Will Robinson | 04/05/1967 |
| Lost in Space
The Astral Traveller
Will Robinson | 04/12/1967 |
| Lost in Space
Condemned of Space
Will Robinson | 09/06/1967 |
| Lost in Space
Kidnapped in Space
Will Robinson | 09/20/1967 |
| Lost in Space
Hunter's Moon
Will Robinson | 09/27/1967 |
| Lost in Space
The Space Primevals
Will Robinson | 10/04/1967 |
| Lost in Space
The Space Destructors
Will Robinson | 10/11/1967 |
| Lost in Space
Flight Into the Future
Will Robinson | 10/25/1967 |
| Lost in Space
Collision of the Planets
Will Robinson | 11/08/1967 |
| Lost in Space
Deadliest of the Species
Will Robinson | 11/22/1967 |
| Lost in Space
A Day at the Zoo
Will Robinson | 11/29/1967 |
| Lost in Space
Castles in Space
Will Robinson | 12/20/1967 |
| Lost in Space
The Anti-Matter Man
Will Robinson | 12/27/1967 |
| Lost in Space
Target: Earth
Will Robinson | 01/03/1968 |
| Lost in Space
Princess of Space
Will Robinson | 01/10/1968 |
| Lost in Space
Fugitives in Space
Will Robinson | 01/31/1968 |
| Lost in Space
Space Beauty
Will Robinson | 02/14/1968 |
| Lost in Space
The Great Vegetable Rebellion
Will Robinson | 02/28/1968 |
| Lost in Space
Junkyard of Space
Will Robinson | 03/06/1968 |
| Wonderful World of Disney
Rascal: Part 1
Sterling North | 02/11/1973 |
 | Rockford Files
Backlash of the Hunter
Nick Butler | 03/27/1974 |
| Rockford Files
Aura Lee, Farewell
Trask | 01/03/1975 |
| Babylon 5
Midnight on the Firing Line
Lennier | 01/26/1994 |
| Babylon 5
Soul Hunter
Lennier | 02/02/1994 |
| Babylon 5
Born to the Purple
Lennier | 02/09/1994 |
| Babylon 5
Infection
Lennier | 02/16/1994 |
| Babylon 5
The Parliament of Dreams
Lennier | 02/23/1994 |
| Babylon 5
Mind War
Lennier | 03/02/1994 |
| Babylon 5
The War Prayer
Lennier | 03/09/1994 |
| Babylon 5
And the Sky Full of Stars
Lennier | 03/16/1994 |
| Babylon 5
Deathwalker
Lennier | 04/20/1994 |
| Babylon 5
Believers
Lennier | 04/27/1994 |
| Babylon 5
Survivors
Lennier | 05/04/1994 |
| Babylon 5
By Any Means Necessary
Lennier | 05/11/1994 |
| Babylon 5
Signs and Portents
Lennier | 05/18/1994 |
| Babylon 5
TKO
Lennier | 05/25/1994 |
| Babylon 5
Grail
Lennier | 07/06/1994 |
| Babylon 5
Eyes
Lennier | 07/13/1994 |
| Babylon 5
Legacies
Lennier | 07/20/1994 |
| Babylon 5
A Voice in the Wilderness: Part 1
Lennier | 07/27/1994 |
| Babylon 5
A Voice in the Wilderness: Part 2
Lennier | 08/03/1994 |
| Babylon 5
Babylon Squared
Lennier | 08/10/1994 |
| Babylon 5
The Quality of Mercy
Lennier | 08/17/1994 |
| Babylon 5
Chrysalis
Lennier | 10/26/1994 |
| Babylon 5
Points of Departure
Lennier | 11/02/1994 |
| Babylon 5
Revelations
Lennier | 11/09/1994 |
| Babylon 5
The Geometry of Shadows
Lennier | 11/16/1994 |
| Babylon 5
A Distant Star
Lennier | 11/23/1994 |
| Babylon 5
The Long Dark
Lennier | 11/30/1994 |
| Babylon 5
Spider in the Web
Lennier | 12/07/1994 |
| Babylon 5
Soul Mates
Lennier | 12/14/1994 |
| Babylon 5
A Race Through Dark Places
Lennier | 01/25/1995 |
| Babylon 5
The Coming of Shadows
Lennier | 02/01/1995 |
| Babylon 5
GROPOS
Lennier | 02/08/1995 |
| Babylon 5
All Alone in the Night
Lennier | 02/15/1995 |
| Babylon 5
Acts of Sacrifice
Lennier | 02/22/1995 |
| Babylon 5
Hunter, Prey
Lennier | 03/01/1995 |
| Babylon 5
There All the Honor Lies
Lennier | 04/26/1995 |
| Babylon 5
And Now for a Word
Lennier | 05/03/1995 |
| Babylon 5
In the Shadow of Z'ha'dum
Lennier | 05/10/1995 |
| Babylon 5
Knives
Lennier | 05/17/1995 |
| Babylon 5
Confessions and Lamentations
Lennier | 05/24/1995 |
| Babylon 5
Matters of Honor
Lennier | 11/06/1995 |
| Babylon 5
Convictions
Lennier | 11/13/1995 |
| Babylon 5
A Day in the Strife
Lennier | 11/20/1995 |
| Babylon 5
Passing Through Gethsemane
Lennier | 11/27/1995 |
| Babylon 5
Voices of Authority
Lennier | 01/29/1996 |
| Babylon 5
Dust to Dust
Lennier | 02/05/1996 |
| Babylon 5
Exogenesis
Lennier | 02/12/1996 |
| Babylon 5
Messages from Earth
Lennier | 02/19/1996 |
| Babylon 5
Point of No Return
Lennier | 02/26/1996 |
| Babylon 5
Severed Dreams
Lennier | 04/01/1996 |
| Babylon 5
Ceremonies of Light and Dark
Lennier | 04/08/1996 |
| Babylon 5
Sic Transit Vir
Lennier | 04/15/1996 |
| Babylon 5
A Late Delivery from Avalon
Lennier | 04/22/1996 |
| Babylon 5
Ship of Tears
Lennier | 04/29/1996 |
| Babylon 5
Interludes and Examinations
Lennier | 05/06/1996 |
| Babylon 5
The Hour of the Wolf
Lennier | 11/04/1996 |
| Babylon 5
Whatever Happened to Mr. Garibaldi?
Lennier | 11/11/1996 |
| Babylon 5
The Summoning
Lennier | 11/18/1996 |
| Babylon 5
Falling Toward Apotheosis
Lennier | 11/25/1996 |
| Babylon 5
The Long Night
Lennier | 01/27/1997 |
| Babylon 5
Into the Fire
Lennier | 02/03/1997 |
| Babylon 5
The Illusion of Truth
Lennier | 02/17/1997 |
| Babylon 5
Atonement
Lennier | 02/24/1997 |
| Babylon 5
Racing Mars
Lennier | 04/21/1997 |
| Babylon 5
Lines of Communication
Lennier | 04/28/1997 |
| Babylon 5
Conflicts of Interest
Lennier | 05/05/1997 |
| Babylon 5
Rumors, Bargains and Lies
Lennier | 05/12/1997 |
| Babylon 5
Moments of Transition
Lennier | 05/19/1997 |
| Babylon 5
No Surrender, No Retreat
Lennier | 05/26/1997 |
| Babylon 5
The Face of the Enemy
Lennier | 06/09/1997 |
| Babylon 5
Intersections in Real Time
Lennier | 06/16/1997 |
| Babylon 5
Between the Darkness and the Light
Lennier | 10/06/1997 |
| Babylon 5
Endgame
Lennier | 10/13/1997 |
| Babylon 5
Rising Star
Lennier | 10/20/1997 |
| Babylon 5
The Deconstruction of Falling Stars
Lennier | 10/27/1997 |
| Babylon 5
No Compromises
Lennier | 01/21/1998 |
| Babylon 5
The Very Long Night of Londo Mollari
Lennier | 01/28/1998 |
| Babylon 5
The Paragon of Animals
Lennier | 02/04/1998 |
| Babylon 5
A View from the Gallery
Lennier | 02/11/1998 |
| Babylon 5
Learning Curve
Lennier | 02/18/1998 |
| Babylon 5
Strange Relations
Lennier | 02/25/1998 |
| Babylon 5
Secrets of the Soul
Lennier | 03/04/1998 |
| Babylon 5
Day of the Dead
Lennier | 03/11/1998 |
| Babylon 5
In the Kingdom of the Blind
Lennier | 03/18/1998 |
| Babylon 5
A Tragedy of Telepaths
Lennier | 03/25/1998 |
| Babylon 5
Phoenix Rising
Lennier | 04/01/1998 |
| Babylon 5
The Ragged Edge
Lennier | 04/08/1998 |
| Babylon 5
The Corps Is Mother, the Corps Is Father
Lennier | 04/15/1998 |
| Babylon 5
Meditations on the Abyss
Lennier | 05/27/1998 |
| Babylon 5
Darkness Ascending
Lennier | 06/03/1998 |
| Babylon 5
And All My Dreams, Torn Asunder
Lennier | 06/10/1998 |
| Babylon 5
Movements of Fire and Shadow
Lennier | 06/17/1998 |
| Babylon 5
The Fall of Centauri Prime
Lennier | 10/28/1998 |
| Babylon 5
The Wheel of Fire
Lennier | 11/04/1998 |
| Babylon 5
Objects in Motion
Lennier | 11/11/1998 |
| Babylon 5
Objects at Rest
Lennier | 11/18/1998 |
| Star Trek: Deep Space Nine
The Siege of AR-558
Kellin | 11/18/1998 |
| Babylon 5
Sleeping in Light
Lennier | 11/25/1998 |
 | What's New, Scooby-Doo?
Toy Scary Boo
Harry Noze | 02/01/2003 |
 | Lost in Space
Impact
Real Dr. Smith | 04/13/2018 |