Character information
Gender Male
Born Sometime between 1949 to 1950
Primary wardrobe Yellow shirt
Age 9-10
Occupation Polar Express passenger
Background information
Performed by Eddie Deezen (motion-capture and voice)
Jimmy "Jax" Pinchak (additional motion-capture)
Appeared in The Film
"Hey! Hey, you! Yeah, you! Do you know what kind of train this is?"
— Know-It-All when first meeting Hero Boy.
Know-It-All is one of the children that rode on the Polar Express. At first, he seems smart, but it is soon apparent that he only wants to be smart and needs the ability to learn more. At some point, hero girl mutters, "Dillan," while referring to know-it-all, possibly calling him by his first name.

Role in the Film

Hero Boy first meets Know-It-All on the train right after he gets on and takes a seat. Know-It-All asks Hero Boy if he knows what kind of train he is on. Hero Girl joins in the conversation and answers the question by simply saying it is a magic train that goes to the North Pole. Know-It-All then goes on to give some detailed information about the train before noticing Herpolsheimer's with a Christmas display outside and calls out to the other children to come and see it. The Christmas display has lots of presents, to which Know-It-All exclaims, "I want all of them!"

When the Conductor goes to punch the children's tickets, he punches "LE" out of the ticket of Know-It-All, who thinks the Conductor is showing off with the way he punches the tickets and wonders what the two letters mean. Hero Girl would later get the same letters. Know-It-All is also surprised to notice train stopping at Billy's house, thinking Hero Boy was supposed to be the last one. Billy turns the trip down, but changes his mind and runs after the train as it leaves, but has difficulty getting on, so Know-It-All suggests that Hero Boy pulls the emergency brake, which he does, stopping the train and allowing Billy to get on board. Suddenly, an angry Conductor storms in and Know-It-All tells Hero Boy on him, despite it being his suggestion.

When Hero Girl goes to give Billy some hot chocolate, Know-It-All tries to persuade her out of it, noting that "it's a violation of railroad safety regulations for a kid to cross moving cars without a grown-up," before the Conductor shows up to assist her. He does it again to Hero Boy when he leaves to give Hero Girl her ticket back. Soon, the Conductor comes to punch Hero Girl's ticket, but she cannot find it, so he takes her to the back of the train. Know-It-All thinks she might get thrown off the train and points out that they might slow down for her, but not come to a complete stop, giving Hero Boy the idea to pull the emergency brake again until he finds the ticket stuck in the air vent, grabs it and goes after Hero Girl and the Conductor.

After the train passes through Glacier Gulch and the Ice Lake, Hero Boy, Hero Girl and the Conductor return to the passenger car. Know-It-All tries to explain to Hero Boy what happened, unaware that he actually experienced more than he did, before Hero Boy heads to the observation car.

At the North Pole, he follows Hero Boy, Hero Girl and Billy through the city (but was unseen) and when they are in the big bag of gifts, they find Know-It-All in the bag with them after he pulls on Billy's leg, probably thinking it was Christmas present. He explains that he is in the bag to make sure he will get everything he wants for Christmas, but that all he found was "a bunch of stupid underwear." They all get rescued from the bag by the elves after arriving at the center of the city. When Santa Claus speaks to the children, Know-It-All impatiently asks Santa to pick him as the one to receive the first gift, after which Santa tells him to be patient and show a bit of humility.

Before boarding the train for the ride home, his ticket gets punched again. He looks at it and reads "LEAN," though he is unaware that one of his fingers was covering the R and that it really says, "LEARN." The Conductor tries explaining his mistake, which makes him angry until he takes a second look at the ticket and sees the R. He apologizes for his outburst and the Conductor smiles. Like the other children, he wants to see Hero Boy's silver bell and feels sorry for him after finding out it got lost.

Before Billy gets off the train, Know-It-All questions why he is doing so until Billy explains that the train has stopped at his house. He also says goodbye to Hero Boy before he gets off the train, still feeling sorry about the bell. He points out, however, that, "It's the thought that counts."

Other appearances

The Video Game

Know-It-All is one of the children whom Hero Boy helps finding their ticket, which was stolen by Scrooge. Before everyone goes to find them, he brags about how he never loses his ticket, then realizes it is gone. His ticket was in the dining car and Hero Boy had to have a food fight with Scrooge's friends to get it back. When Know-It-All sees the mess, he tells Hero Boy that throwing objects inside train cars is against railroad regulations, but thanks him for finding his ticket and advises him to leave the dining car before the cook sees the mess. Know-It-All is also one of the children who does the big thanks for helping find their tickets, then advises everyone to take their seats since regulations forbids blocking fire exits. Next, he appears as one of the children who cheer Hero Boy during the final battle with Scrooge.

Later, he appears on board the zeppelins with Hero Boy, Hero Girl and Billy. He asks the captain if him helping will make him the first to see Santa, which annoys the other children. After Hero Boy returns from driving the zeppelin, Know-It-All complains about how bumpy the ride was.

International languages

Language Name Meaning Voice actor(s)
Latin AmericanNiño SabiondoWise BoyHéctor Emmanuel Gómez
European SpanishNiño SabiondoWise BoyMasumi Mutsuda
FrenchJe-Sais-ToutI Know EverythingLaurent Lévy
GermanDer BesserwisserThe Know-It-AllHannes Maurer
PolishMądralaWise GuyRafał Kołsut
ItalianSaputelloSapientoneLeonardo Graziano
SwedishBesserwisserWiseacreAdam Giertz
RussianMal’čik v Žëltom Kostjume i OčkahA Boy in a Yellow Suit and GlassesDmitriy Cherevatenko
JapaneseShittakaburi-KkoKnowledgeable ChildTanaka Kyohei


  • Know-It-All is one of many characters in the film to not be from the book.
  • In the film, Know-It-All says that the train is a Baldwin 2-8-4 S3-class Berkshire type steam locomotive built at the Baldwin Locomotive Works in 1931 and weighs 456,100 pounds. In reality, the Baldwin Locomotive Works did built 35 locomotives of the S3-class for the Erie Railroad, but they were built in 1928 and weighed 457,500 pounds.
    • In comparison to Pere Marquette 1225, the train's basis for both the book and the film, it has the same wheel arrangement, but it weighs 442,500 and is a member of the N1 class, which were built at the Lima Locomotive Works in 1941.[1][2]


  • "Yeah, I know it's a magic train. Actually, it's a Baldwin 2-8-4 S3-class Berkshire type steam locomotive built in 1931 at the Baldwin Locomotive Works. It weighs 456,100 pounds and..."
  • "Hey, look, everybody! Herpolsheimer's! Herpolsheimer's!"
  • "Boy, that guy sure likes to show off with his ticket punch. Look what that wise guy punched on my ticket. 'L-E.' What the heck does that mean?"
  • "Ah, it's just another pick-up. That's weird. I thought you were supposed to be the last one."
  • "He did!"
  • "You know, Montezuma, the king of the Aztecs would drink 50 quarts of hot chocolate every day. It was thick as mud and red. He put chili pepper in instead of sugar. Get it? Hot chocolate?"
  • "Hey, you missed it. We rode down some really sharp hills. And then, we were on what looked like a frozen lake. But I know it was just an optical illusion caused by moonlight atmosphere. He said the train was actually on the ice, but I said it was impossible because you can't put a train track... Hey, where you going now?"
  • "Who gets the first gift of Christmas?"
  • "Same as you, I'm checking out my Christmas presents. I want to make sure I've got everything on my list. All I got was one present and all I had was a bunch of stupid underwear!"
  • "Hey, what gives? It was five minutes to midnight four minutes ago!"
  • "Pick me! Pick me! I want the first gift! I want the first gift!"
  • "'LEAN'? Whatever that's supposed to mean?"
  • "Hey, are you saying I don't know how to...?! Oh. I'm sorry. It says 'LEARN'. My mistake."


  1. Erie 2-8-4 "Berkshire" Locomotives of the USA
  2. 2-8-4 "Berkshire" Locomotives in the USA
Children: Hero Boy (Chris) Hero Girl Know-It-All Billy the Lonely Boy Sister Sarah Gus the Toothless Boy Boy on Train Red Head Girl Little Boy Young Boy Steven
Adults: Conductor Hobo Smokey and Steamer Santa Claus Pastry Chefs Waiters Hero Boy's Parents
Elves: Elves Acrobatic Elves Elf General Elf Lieutenant Elf Singer
Animals: Caribou Santa Claus' Reindeer
Toys: Ebenezer Scrooge Puppet Jack-in-the-Boxes

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