Izlyr

Izlyr was the Ice Warrior delegate to Peladon when it applied for membership in the Galactic Federation. The Third Doctor initially suspected him and his sub-delegate Ssorg of being behind the attacks on Peladon, due to his previous encounters with the latter's species, to which Izlyr was unhappy about. However, since the Doctor had saved his life when the statue of Aggedor was dropped by Grun, he felt that he should pay off that debt by helping him. Izlyr helped the Doctor uncover and defeat Hepesh and Arcturus, the real culprits. He soon found out that the Doctor and Jo were not really Earth delegates at all when he was greeted by the real Earth delegate. When he went to find the Doctor and Jo to demand an explanation, he saw the TARDIS dematerialise. (TV: The Curse of Peladon)

When Grand Marshall Raxlyr had overthrown the royal family on New Mars, Izlyr fled to Peladon with Princess Lixgaar as a temporary solution for the princess' safety until she could be taken to Galactic Federation headquarters on Io. (AUDIO: The Prisoner of Peladon)