Thomas H. Norstein is the secondary protagonist in Digimon Data Squad. He is a genius. His partner digimon is Gaomon.
He is voiced by Hirofumi Nojima in the Japanese version of the anime, and by Crispin Freeman in the English version of the anime.
His mother was overall Japanese, and his father is a prominent Austrian aristocrat named Franz Norstein.
Franz met his future wife while she was an exchange student in Austria, and Thomas lived with his mother in Japan.