When an angry Conductor storms in, Know-It-All tattles on Hero Boy, even though it was his idea. However, since he has trouble getting on, Know-It-All suggests Hero Boy should pull the emergency brake, which he does, stopping the train and allowing Billy to get on board. Billy turns the trip down, but changes his mind and runs after the train as it leaves. He is surprised when they stop at Billy's house, as he thought Hero Boy was the last passenger.
Hero Girl would later get the same letters. When the Conductor punches the children's tickets, he puts 'LE' on the one from Know-It-All, who claims the Conductor is a show-off with how he punches tickets and wonders what the letters mean. The store features a Christmas display with a pile of presents, to which Know-It-All exclaims, 'I want all of them!' Know-It-All proceeds to give a detailed description of the locomotive before noticing Herpolsheimer's outside and calls out to the other children to come and see it. Hero Girl joins in saying it is a magic train that goes to the North Pole. Know-It-All asks Hero Boy about what kind of train they are on, leaving him confused. Hero Boy first meets Know-It-All on the train right after he takes a seat. Role in the Film Journey to the North Pole
