The Tamas were Felicity Island's shamans, herbalists, and all-round mystics. Amanaki Tama appointed a heroic outsider to succeed him as shaman, since no one in his own family was suited to take over the role.
Only Amanaki makes a major appearance in the Shipwrecked and Single storyline while Patariki and Afi may appear guarding the entrance to Creepy Hollow. They live in The Shaman's Hut.