Kou Taiki is the most intellectual. His abilities rival that of Ami Mizuno, though he considers her romantic notions foolish. Ami’s appeal for him to see the good in dreaming does begin to have an effect, however. In combat with a phage, Star Maker is the first of the Starlights to willingly allow Sailor Moon to heal the monster rather than trying to kill it herself.
Like Yaten, Taiki believes that Seiya should stay away from Usagi after learning she is Sailor Moon, despite their wish, shared by Princess Kakyuu and the Guardian Senshi, for them all to work together.
In the anime, he sometimes wears glasses.