Theta Stigma

Theta Stigma was an alternate dimension version of the Eighth Doctor. On one occasion, he went to his dimension's version of the Rani for psychiatric advice. (COMIC: The Glorious Dead)

Behind the scenes

 * Theta Stigma's name is an amalgamation of the Doctor's childhood nickname Theta Sigma and the word stigma.
 * Theta's appearance and personality is based on that of Charlie Brown, the main antagonist of the Peanuts comic strips by Charles M Schulz.