DC Originals Superman Series 2 Head Knocker: The Man of Steel… and bobble! This Superman Head Knocker is from Series 2 of the DC Originals line. The superhero comes in his classic costume on a logo base. He makes a great gift for any fan in your life! Superman has been through many design changes since his initial introduction to the world, and here's one more for the list-- bobble head! This series 2 Man of Steel head knocker stands approximately 6-inches tall in his classic costume on a logo base. Take him home today! Age: 6+ The man of steel is back and flying high above the skies of Metropolis. Superman is part of the DC classics series 2 Head Knocker line.