Place of Origin:
A Guard was a Tigellan who guarded the entrance to their underground city.
The guard saw Meglos (who was using the form of the Fourth Doctor) enter the city. When he encountered The Doctor and K9, he told The Doctor that he didn’t see him leave. This confused The Doctor, and the guard allowed him to enter the city.
He later took part in a gunfight with the Gaztaks.
He then informed Lexa and Zastor that the Gaztaks had withdrawn. (Meglos)