A former crystalsmith who was frequently employed by the scientists of Ko- and Ga-Metru to make crystals for electronics and lenses for telescopes. He also took part in multiple scholarships on Nynrah, and he even learned the secret of Zamor Lattice, but honouring his arrangements with the Ghosts, he does not let anyone else know anything about Zamors. Later, when the Barraki disappeared and things went into chaos, Nynrah became even more secluded, so Omaukuh had to seek new places to study elsewhere. During one of his expeditions to Udogawai with Captain Khridet and Guard Onrah, the town where he was residing was attacked by Steltian pirates. He along with Khridet and Onrah resolved themselves to use the Toa stones available and fight off the invaders. He was glad to return to Metru Nui and get back to his work, now in an even better capacity than before.
Thus he was really annoyed when the civil war happened. The guy just couldn't catch a break. He did his best to preserve his dignity and his creations, but he now wants to make up for that by helping sort out the fallout of the war.
He is aloof and focused on his interest, but generally kind and helpful when asked to help. Sometimes he forgets he's a Toa.