Karaaka is the Toa of Psionics, a powerful, wise and lithe Toa that lives alone in the heart of Voya Nui. He is the only remaining member of a long lost team, and his power is rivalled by none. When opposed by the threat of Skull Spiders, Karaaka rose to the task like a Kolhi player rises for the puck. Despite being close (as the Rahi flies) to the land of Okoto, Karaaka never encountered the Toa Okoto, believing it best to wait it out and leave his island (and all the Matorans) isolated. Solitude was the answer.
Psionics is the alleged psychic effects of telepathy, psychokinesis, pyrokinesis and others.