Tsukasa is the protagonist of the .hack//Sign anime series. He is a Wavemaster whose consciousness becomes trapped in The World, while his real body is in a coma. He is a young silver-haired boy clad in grey robes. Morganna poisons Aura with his negative emotions to prevent Aura from awakening. Tsukasa is distant at first, but he eventually connects with Mimiru, Subaru, and Bear.