Dennis the Menace Cartoon: Cast, Episodes, Where to Watch

The Dennis the Menace cartoon was appointment television in my house, the kind of Saturday morning chaos you took in wearing pajamas with a bowl of cereal going soggy in your lap.

If you landed here trying to remember which version you watched, where to stream it now, or who voiced that gap-toothed troublemaker in the striped shirt, I have you sorted.

When Did the Dennis the Menace Cartoon Come Out?

The one most people mean when they say the Dennis the Menace cartoon premiered on September 22, 1986.

It pulled Hank Ketcham’s newspaper strip off the page and turned it into wall-to-wall animated mayhem, and for a certain age of kid it was a staple.

Here is the quick rundown:

• It ran from 1986 to 1988 across two seasons.
• There were 78 episodes, and each half hour was chopped into three short segments of six or seven minutes.
• Season 1 aired in syndication, then season 2 moved to Saturday mornings on CBS.
• The studio behind it was DIC, and General Mills sponsored the show and even held the copyright.

Where to Watch the Dennis the Menace Cartoon

This is the question that brings most people here, so let me keep it simple. Both seasons of the 1986 series live on Prime Video, and the same show runs free with ads on The Roku Channel if you would rather not pay.

Want full episodes for free with no catch?

WildBrain, the company that owns the library now, posts them on its official Dennis the Menace YouTube channel. It is the cleanest legal way to watch the cartoon without a subscription.

Dennis the Menace Cartoon Voices and Cast

The voice cast is where the Dennis the Menace cartoon gets more interesting than it has any right to be. A few of these names went on to do much bigger things.

• Brennan Thicke voiced Dennis Mitchell. If the surname rings a bell, yes, he is the son of Growing Pains star Alan Thicke.
• Phil Hartman voiced both Mr. Wilson and Dennis’s dad Henry in season 1. The Saturday Night Live and Simpsons legend brought real comic timing to a kids’ show.
• Maurice LaMarche took over Mr. Wilson, Henry, and the dog Ruff for season 2. You know him now as the voice of Brain from Pinky and the Brain.
• Alice Mitchell and Martha Wilson were voiced by Louise Vallance and later Marilyn Lightstone.
• Jeannie Elias handled Margaret, Joey, and Tommy.

Dennis the Menace Cartoon Characters

The whole thing works because of the little world around Dennis. Here are the players worth knowing:

• Dennis Mitchell: The five-year-old with the flat blonde hair, freckles, and a slingshot. Never once mean, just a walking disaster of good intentions.
• Mr. George Wilson: The retired neighbor whose only wish is peace and quiet, which Dennis destroys on a schedule.
• Martha Wilson: Mr. Wilson’s patient wife, who tends to like Dennis a lot more than her husband does.
• Henry and Alice Mitchell: Dennis’s parents, forever apologizing to the neighborhood.
• Ruff: The loyal family dog, usually right in the middle of the mess.
• Margaret Wade: The girl with a crush on Dennis, which he wants no part of.
• Joey, Gina, and Tommy: Dennis’s crew, along for most of the chaos.

That character list is the exact reason the show still holds up. Every kid on the block had a Margaret, a Joey, and at least one long-suffering Mr. Wilson.

What Made Dennis So Much Fun

Here is my honest take on why Dennis landed. He is not a bad kid. Every disaster comes from curiosity or a well-meaning idea that goes sideways, and that is a very different flavor of trouble than the smug pranksters who came later.

• He wrecks Mr. Wilson’s garden trying to help, not to be cruel.
• He picks up a new hobby every week and every hobby ends in chaos.
• Under all of it, the kid has a heart of gold, and the show never lets you forget it.

That balance came straight from the comic strip, which started in 1951 and quietly poked at bigger ideas about childhood: freedom, curiosity, and how much of a kid we sand down in the name of good behavior. The cartoon kept that warmth, which is why it reads more like the gentler cartoons we grew up on than a modern gag machine.

The Two Dennis the Menaces Nobody Warned You About

This is my favorite piece of trivia in the whole story. In March 1951, two completely separate Dennis the Menace characters appeared in the same week, one in America and one in Britain, and neither creator had any idea the other existed.

• Hank Ketcham, a former Disney animator from California, made the American Dennis, the freckled blonde kid in dungarees who torments Mr. Wilson.
• British cartoonist David Law made the UK Dennis for the comic The Beano, a black-haired little terror with a dog named Gnasher.
• They debuted the same week with zero connection, pure coincidence.

The Original Dennis the Menace TV Show

People often ask which was the original Dennis the Menace show, and it was not a cartoon at all.

The first screen version was a live-action sitcom that ran on CBS from 1959 to 1963, with a young Jay North as Dennis, Herbert Anderson as his dad Henry, and Gloria Henry as his mom Alice. It ran four seasons in black and white and is the one your grandparents probably picture.

After the 1986 animated series, Dennis kept going. There was a 1993 follow-up cartoon, The All-New Dennis the Menace, plus the 1993 live-action film with Walter Matthau as a perfect grumpy Mr. Wilson.

But the 1986 show is the one most people my age mean when they say the Dennis the Menace cartoon.

Dennis the Menace Cartoon Cast at a Glance

Here is every main character from the 1986 series, their role, and who voiced them, so you have it all in one spot.

That is the whole story of the Dennis the Menace cartoon, from the 1986 show now streaming on Prime Video back to the British twin nobody warned you about.

Put on an episode, and I promise Mr. Wilson’s blood pressure will take you right back.