Jade Leech

Jade Leech is a second-year student, the vice head of Octavinelle, and Azul's assistant as well as Floyd's twin. He's the founder of the Mountain Loving Club. He likes to collect mushrooms and make terrariums.

Jade's unique magic is called "Shock The Heart." Whoever looks into his left eye is forced to only speak the truth after he, specifically, ask them a question. He can only use his ability on a person once, and it's not guaranteed to work on strong magicians or overly cautious people. It works best against those who let their guard down or become frightened.

(Source: Twisted Wonderland Wiki)