McGoyver is involved in the following quests:
He is located in the water north of the Valgarde dock, near a flying machine.
During the quest , you can ask him to take you to the Explorers' League Outpost. Doing so will put you on a taxi to the outpost. Be advised, the flight path from Valgarde to the Outpost is much longer than just swimming across to water and riding up to the Outpost directly.
His name is based on MacGyver from the TV show with the same name.