My son in his first ever Transformer costume, Little Starscream, (G1) who was so well received by our cosplay friends and the crowds at Botcon, and due to our friend as King Starscream (the giant 15 foot tall Starscream replica), he was dubbed 'Prince Starscream'. The name stuck, and the Prince is still going after nearly three years! And it all started as his Halloween costume.
