Mr. Book is absurdly tall. He is at least 6’2". His prominent feature is his amber colored eyes and the three large slashes cut across his face. His skin is a sallow color riddled with pock marks and small cuts. He is always dressed in an impeccable black suit. He usually wears large aviator sunglasses.
Mr. Book is the constant companion of Adam Crosse. Nothing else is known about this character.