He is seen with Prince Kurthnaga in Fire Emblem: Path of Radiance. As the Greil Mercenaries were traveling with Princess Elincia to the theocracy of Begnion by ship, they were run ashore by Kilvan pirates. The shore they so happen to dock upon was none other than the solemn dragon country of Goldoa. They were hailed by Black Dragon prince Kurthnaga as he was strolling along the coast with royal retainer Gareth (as well as his own personal guard). After an exchanging of word and traveling gifts from the prince, the mercenaries were on their way. This is the only appearance of Gareth in Path of Radiance.