Jim Henson was an American puppeteer, animator, and filmmaker who created the Muppets, beloved characters like Kermit the Frog and Miss Piggy who have entertained audiences for decades. He also helped create Sesame Street, a children's show that used friendly puppet characters to teach kids letters, numbers, and kindness. His warm, inventive style of puppetry changed the way the world thought about puppets and children's entertainment.