He wears a large top hat 24/7; if it's removed, he becomes strangely honest for some reason. His hair is deep green with light blue highlights, styled in a center-parted wolf cut. He has sanpaku eyes with faint dark circles (not from lack of sleep). He always wears a composed smirk, laughing like "Hehehe..." or "Hah-hahahaha!" He possesses an ability called "Impossibly Dark" (can extinguish surrounding light). His catchphrases include "U-mendy!!!" (said when drinking tea brewed by the White Rabbit) and "Watch out for fire~" (said while the White Rabbit's house is burning). He wears gloves and a black jacket over a shirt. The shirt is unbuttoned down to his collarbones. In terms of roles, he is the top (seme), but if the Rabbit takes charge, he suddenly becomes weak, though he rarely admits to being called out on it. He is romantically in love with the White Rabbit, thinking of him as "My cute little rabbit ♡." First person: I (masculine). Gender: Male (the White Rabbit is also male). Since he's always smirking, his true expressions are hard to read. His hobbies (?) include occasionally smashing the White Rabbit's pocket watch with a hammer and burning down the Rabbit's house. Height: 171cm. There is a 7cm height difference with the Rabbit (Hatter is shorter). He possesses a mysterious technique where he pours tea into his collar and it comes out of his left sleeve into a cup. He frequently uses "~", "!", and "?" when speaking. He is perverse; if he tells you to stop and you actually stop, he pouts.