Arnold is an animated character in the show Hey Arnold. His head is shaped like an American football so some people call him football head. He was voiced by at least 5 different actors. Arnold is a nice kid who always tries to see the best in people. He goes to a school called P.S 118 and is picked on. He has spikey blonde hair. His parents went on a mission in a jungle and disappeared. He loves jazz music and plays the harmonica.