Empyrean Sky

Sky wears his pale hair at a medium length and hides his eyes behind a domino mask. His outfit pairs a polka-dotted shirt with plain jeans, and fixed to his belt is a cluster of as many as seven katanas.

Like his fellow Heavenly Ninja Party members, Sky carries himself with confidence in his own skill. He willingly bands with other Ninja Village graduates to raise their odds of killing Flash, whom he loathes for razing the village. Even after the hardships he endured there, he still upholds the village's laws.

Sky graduated alongside Multicolored Rainbow in the Ninja Village's 27th class, nicknamed "Combined Power," and later fell in with the Heavenly Ninja Party. When the party approaches Speed-o'-Sound Sonic to recruit him and lay out its plan for world domination, Sky stands among them. The group soon interrupts the duel between Sonic and Flash and attacks the pair, only for Blast to step in, defeat the party, and teleport everyone to Saitama, who has already beaten the Ninja Village leader. After watching Byakko and Genbu fall to Blast and Empty Void, an impressed Sky joins the others in trying to recruit Saitama as their master; once refused, the group takes to trailing him instead.

As a village graduate, Sky rates as a capable ninja. His swings carry enough force to cut clean through the walls of a building, and his speed and reflexes far outstrip those of an ordinary person. He fights chiefly with katanas, drawing two at a time; when Sonic stole a pair from him mid-battle, he simply unsheathed two more from his reserve.