Appearance: Wing is the person who taught Gon and Killua the knowledge on Nen. He is young and looks cool in his glasses. The other front side of his polo shirt is always untucked. It's a reasonable mystery. I believe it has something to do with his Nen.
Personality: Wing was first introduced in the Celestial Tower with his student Zooci. Zooci tried to use Nen in his fight with Killua for he was having a hard time and it really stunned Killua for he recognizes the aura very similar to his brother's (Irumi). Wing roared angrily over the earsplitting noise in the arena to stop Zooci from doing what he planned to do. Zooci lost. Gon and Killua became very curious so they approached Wing unreluctantly. At first, Wing lied about Nen but later on, he explained the truth. Gon and Killua didn't take time in learning their powers.