| Year | Title | Role | Notes |
|---|
| 1988–1989 | The Greatest Adventure: Stories from the Bible | The Serpent, Judas Iscariot | 2 episodes[5] |
| Fantastic Max | Dermot D. McDermott | 4 episodes |
| 1989 | Long Ago and Far Away | Abel | Episode: "Abel's Island" |
| Paddington Bear | Mr. Curry | 13 episodes |
| 1990–1991 | Fox's Peter Pan & the Pirates | Captain Hook | 46 episodes[5] |
| 1990 | Gravedale High | Mr. Tutner | 3 episodes |
| The Adventures of Don Coyote and Sancho Panda | Sultan | Episode: "A Knight in Arabia" |
| 1990–1991 | Wake, Rattle & Roll | Ronald Chump | 28 episodes |
| 1990 | Tiny Toon Adventures | Prince Charles, Reginald | Episode: "Europe in 30 Minutes"[5] |
| The Marzipan Pig | Narrator | Television film |
| TaleSpin | Thaddeus E. Klang | 2 episodes |
| 1991–1993 | The Pirates of Dark Water | Konk | 20 episodes |
| 1991–1994 | The Legend of Prince Valiant | Sir Gawain | 39 episodes |
| 1991–1996 | Captain Planet and the Planeteers | MAL | 26 episodes |
| 1991–1992 | Darkwing Duck | Taurus Bulba | 3 episodes |
| Tom & Jerry Kids | Sheriff of Rottingham, Banker | 2 episodes |
| 1992 | Fish Police | Sharkster | 6 episodes |
| Defenders of Dynatron City | Atom Ed | Pilot |
| Capitol Critters | Senator | Episode: "Max Goes to Washington" |
| 1992–1994 | Dinosaurs | Various roles | 7 episodes |
| 1992 | Wild West C.O.W.-Boys of Moo Mesa | Jacque Le Beefe | Episode: "A Snake in Cow's Clothing" |
| Batman: The Animated Series | Henchman | Episodes: "Fear of Victory" |
| Liquid Television | The Snake | Segment: "Meggamorphosis" |
| 1992–1994 | The Little Mermaid | Evil Manta | 4 episodes |
| 1992 | The Steadfast Tin Soldier | Jack-in-the-Box | Television film |
| Eek! The Cat | Narrator | Episode: "It's a Very Merry Eek's-mas" |
| 1993–1994 | Mighty Max | Skullmaster, Jules Verne | 12 episodes |
| 1993 | Droopy, Master Detective | Additional voices | 13 episodes |
| 1994–1997 | Aaahh!!! Real Monsters | Zimbo, Additional roles | 19 episodes[5] |
| Duckman | King Chicken, Simon Desmond | 10 episodes |
| 1994 | Sonic the Hedgehog | King Acorn, Keeper of the Time Stones | 4 episodes |
| Aladdin | Amok Mon-Ra, Caliph Kapok | 2 episodes |
| 1994–1995 | Superhuman Samurai Syber-Squad | Kilokahn | 53 episodes[5] |
| Turbocharged Thunderbirds | The Atrocimator | 13 episodes |
| 1995–1997 | The Mask: Animated Series | Pretorius | 14 episodes[5] |
| 1995 | Daisy-Head Mayzie | Finagle | Television film |
| 1995–1996 | Gargoyles | Dr. Anton Sevarius | 7 episodes[5] |
| 1996 | Adventures from the Book of Virtues | King Minos, Gessler | 2 episodes |
| Quack Pack | Moltoc |
| The Story of Santa Claus | Nostros | Television film[5] |
| 1996–1997 | Mighty Ducks | Lord Dragaunus | 21 episodes |
| Bruno the Kid | Lazlo Gigahurtz | 9 episodes |
| 1996–1998 | Jumanji | Trader Slick | 18 episodes |
| 1997 | Freakazoid! | Dr. Mystico | Episode: "Island of Dr. Mystico"[5] |
| Casper | Pianist | Episode: "Stinkie Time Theatre" |
| Teen Angel | The Frog | Episode: "Jeremiah Was a Bullfrog" |
| 1998 | Stories from My Childhood | The Beast | Episode: "Beauty and the Beast (A Tale of the Crimson Flower)" |
| Where on Earth is Carmen Sandiego? | Dr. Gunnar Maelstrom | 3 episodes |
| The Net | The Sorcerer | 10 episodes |
| The First Snow of Winter | Voley | Television film |
| 1998–2000 | Voltron: The Third Dimension | Prince Lotor, King Alfor | 23 episodes[5] |
| 1998–2004 | The Wild Thornberrys | Nigel Thornberry, additional voices | 92 episodes[5] |
| 1999, 2003–2004 | Hey Arnold! | Leichliter | 3 episodes[5] |
| 1999 | Xyber 9: New Dawn | King Renard | 18 episodes |
| 1999, 2001 | Big Guy and Rusty the Boy Robot | Dr. Neugog | 2 episodes |
| 1999 | Recess | Dr. Slicer | Episode: "Prickly is Leaving" |
| Johnny Bravo | Big Brother | Episode: "Brave New Johnny"[5] |
| Pinky, Elmyra & the Brain | Monkman | Episode: "Teleport a Friend"[5] |
| The Titanic Chronicles | Officer Lightoller | Television film |
| 2000 | Martial Law | The One | 3 episodes |
| Batman Beyond | Mutro Botha | Episode: "Final Cut"[5] |
| 100 Deeds for Eddie McDowd | The Rottweiler | Episode: "Big Dog"[5] |
| 2000–2001 | Redwall | Slagar the Cruel | 13 episodes[5] |
| 2001 | Gary & Mike | Jared Wexler | Episode: "Crisscross" |
| Teacher's Pet | Spooky | Episode: "The Tale of the Telltale Taffy" |
| 2002–2003 | Teamo Supremo | Laser Pirate, Dastardly Dentist | 3 episodes |
| 2002 | Samurai Jack | Worm 1 | Episode: "Jack Tales" |
| Ozzy & Drix | Nick O'Teen, Scarlet Fever | 2 episodes[5] |
| 2003–2005 | The Adventures of Jimmy Neutron: Boy Genius | Professor Finbarr Calamitous | 8 episodes[5] |
| 2003 | K10C: Kids' Ten Commandments | Hazzaka | Episode: "The Not-So-Golden Calf" |
| Chalkzone | Jacko | 2 episodes |
| The Proud Family | Pervical | Episode: "The Good, the Bad, and the Ugly" |
| 2004 | Higglytown Heroes | Libraian Hero | 2 episodes |
| 2005 | Duck Dodgers | Magnificent Rogue | Episode: "Villainstruck"[5] |
| Loonatics Unleashed | Ringmaster | Episode: "The World is My Circus"[5] |
| 2006 | The Jimmy Timmy Power Hour 2: When Nerds Collide | Professor Finbarr Calamitous | Television film[5] |
| Eloise: The Animated Series | Mr. Salamone | 13 episodes |
| 2008, 2012 | Phineas and Ferb | Stubbings, Worthington Dubois | 2 episodes[5] |
| 2008 | Ben 10: Alien Force | Dr. Joseph Chadwick, Knight #2 | Episode: "Pet Project"[5] |
| 2010 | Regular Show | Hot Dog Leader, Master Prank Caller #2 | 2 episodes[5] |
| 2012–2013 | Young Justice | G. Gordon Godfrey | 8 episodes[5] |
| 2012 | Transformers: Rescue Bots | Doctor Morocco | 4 episodes[5] |
| The High Fructose Adventures of Annoying Orange | Arugula, Endive, Plum | 2 episodes |
| 2012–2014 | Randy Cunningham: 9th Grade Ninja | The Sorcerer | 21 episodes[5] |
| Star Wars: The Clone Wars | Chancellor Palpatine/Darth Sidious | 10 episodes[5] |
| 2013 | Wonder Pets | Tin Man | Episode: "In the Land of Oz" |
| Ben 10: Omniverse | Dr. Joseph Chadwick, Stage Manager | Episode: "Return to Forever"[5] |
| 2014 | Over the Garden Wall | Auntie Whispers | Episode: "The Ringing of the Bell"[5] |