This paper toy is a chibi Charles (also referred to as Carl), one of Diva's Chevaliers and only appears in the Blood+ (pronounced as "Blood Plus") anime series, the papercraft was created by Larry-San.
Charles also has some similarities with the character Karl Fei-Ong of Blood+ anime. Very much like Karl Fei-Ong, Charles is very drawn, in some way, to Saya's beserk self, and despite crying a lot he has a very sadistic side to himself and always smiles despite his cruel vocabulary. Albeit these sides of him, he is very afraid of moths.
Charles has black hair and blue eyes, seeming to be always smiling despite his sort of words. He takes the form of a twelve year old boy and wears a black mantle with a blue rose pinned on it. He often has problems tying up his mantle due to his lack of an arm and Riku always assists him to do it after they get in friendly terms. [Source: wikia]