A demon who resides in Lee Hitsugaya's zanpakuto, Labrynx appears only when Lee is in danger, or when he summons him.
Labrynx has two forms
Blade
In this form, Labrynx is always held by him master. From this form he can shoot out a green gel which sticks to it's opponents and excretes a toxic acid tough enough to melt through bone and metal.
Human
Labrynx stands about 6'1, which is odd since that makes him a few inches taller then his master. He always wears a black trench coat along with black dress pants and a black dress shirt and a red tie underneath. His hair is black and flows back messily over his shoulders. In this form he has control over time and can summon a giant hourglass which traps his opponent, slowly covering them in sand until they are crushed or suffocated.