Relkdahz was an Otevrel who served in Starfleet as a chief engineer in the 2380s. He held the rank of commander.

In 2381, Relkdahz was serving on the USS New York during the Borg invasion of the Federation. Just prior to the battle with the Borg near Alonis, Relkdahz and his team had only time to upgrade five photon torpedoes to transphasic torpedoes, although Relkdahz had completed the addition of transphasic shields to the New York. Relkdahz transferred to the USS Robinson. (ST - Typhon Pact novel: Rough Beasts of Empire)

USS New York personnel
	Cavanagh • Jaix • Relkdahz • Benjamin Sisko

USS Robinson personnel
	Relkdahz • Rogeiro • Scalin Resk • Benjamin Sisko • Sivadeki • Stannis • Uteln