Trey Clover

Trey Clover is a third-year and the vice head of Heartslabyul. He's calm and is seen as a protector by the rest. He always backs up the overly-strict Riddle. He has younger brothers and a little sister. Trey has an obsession with dental care, and takes immaculate care of his own—as well his siblings' and the occasional reluctant dormmate's—teeth.

His unique magic is called "Doodle Suit." For a limited period of time, his magic has the ability to “overwrite things with what one imagines.” It can do it with color, smell, taste, etc.

(Source: Twisted Wonderland Wiki)