This paper craft is a chibi Allen Walker (sometimes romanized as "Alen"), a former Exorcist and a member of the European Branch of the Black Order which he is now seen and classified by them as a Noah, based on the manga series D.Gray-man, the papercraft is created by tsunyandere.
Allen Walker is also currently the current host of the former Noah, Nea Walker. He is the adoptive son of Mana Walker, the elder brother of Nea Walker and Nea is Allen's adoptive uncle. Allen was also the former apprentice of the Exorcist General, Cross Marian. Allen is mostly been seen with Timcanpy on his side.
Allen portrays himself as a kind, generous, and very polite young man. He tends to be very self-sacrificing, often willing to let his body and emotions take devastating blows for the sake of others; this trait is something that has angered several of his comrades and friends, most noticeably Yu Kanda and Lenalee Lee. Allen also has unassuming and borderline naive traits, despite the troubling life his master and General, Cross Marian, forced him to live. Because of his cursed Pentacle Eye, which allows him to see the human souls bound to Akuma, Allen considers Akuma to be just as important to him as humans, swearing his left arm to saving Akuma and his right to saving humans in his attempt to be, as he once put it, "a destroyer who can save".
Over time, Allen's personality has seen a shift; several times, his "dark side", something he developed to survive the gamblers and con-artists Cross sacrificed him to, has shown itself, frequently shocking and scaring those around him. He has also begun using less polite speech, something noted by and encouraged by Lenalee and Johnny Gill. The one person who can consistently make Allen break his polite mold is fellow Exorcist Yu Kanda; their differing views but similar "darknesses", as it is described by Noise Marie, lead to them conflicting frequently, sometimes over menial issues.
As a child, Allen was actually a much different person; he was rude and withdrawn, so hesitant to form relationships that he often resorted to insulting people who showed him the smallest bit of kindness. After he was abandoned as a child and taken in by a travelling circus, his only friend was a dog named Allen, who was owned by the clown Mana Walker. After Allen the dog was killed by another clown, Cosimo, who was jealous of Allen the dog and Mana's performance skills, Allen openly mourned the loss of the dog. Over time, Allen took Allen the dog's name at Mana's insistence.
Allen became so attached to Mana that, when Mana died, he brought him back as an Akuma, and when Mana died a second time, this time because of Allen's newly awakened Innocence, Allen briefly went mad and feral, the shock causing his hair to go white and his rude personality to completely flip; when Allen finally recovered, Cross, who had been taking care of him, immediately noticed that he had started talking "just like Mana".
Allen is a young man of average height with a lean, muscular physique, which, over the course of time, has become heavily marred with scars. He has medium-length gray/white hair that has now grown to shoulder-length, silver/gray eyes, and his skin is somewhat pale. Allen has an unusual scar on the left side of his face that starts as a pentagram on his forehead, trails down in a line that severs his eyebrow and mars his eyelid, and hooks slightly at his cheekbone and follows his cheek down close to his chin. It also has an extra line of scar tissue that runs parallel to his lower eyelid. This scar was given to him by Mana Walker, his foster father, after Allen turned him into an Akuma; the scar is also the source of his Pentacle Eye, which allows him to detect Akuma and see the human souls bound to their bodies.
Allen's parasitic type Innocence takes the form of the entirety of his left arm, from his shoulder down. Originally, it was red and quite veinous, but after he invoked his Crown Clown for the first time, the skin became much darker and more scale-like, his fingernails turning black and growing out and arrow-shaped markings forming along his shoulder blade. When his arm evolved further, the skin seemed to smooth out more.
Because of his odd hair color and his strange arm, Allen has a tendency to cover his hair with hats and hoods and wear gloves and long-sleeved shirts to keep people from seeing his arm.
Allen's Exorcist uniforms often consist of concealing jackets and gloves, as well as pants and heavy duty boots, though Allen's latest uniform features a shorter jacket and capri-like pants. He always asks for gloves to be included so he can keep his hand hidden, though recently Allen has gotten more comfortable with showing his hand when he is just around his comrades. As a child, Allen's hair was a more reddish-brown color; his hair turned white at an early age due to the shock he suffered at the violent death of Mana.
You can download the paper craft toy here: D.Gray-man - Chibi Allen Walker Free Papercraft Download