This cube craft paper toy is the Sabo, based on the manga / anime series One Piece, this papercraft was designed by blackignus. Sabo was a childhood friend of Portgas D. Ace, and eventually Monkey D. Luffy, to the point where the three considered themselves to be "brothers". He was born into a noble family, but decided to run away and live in the Gray Terminal, eventually setting out to sea on his own.
He was a ten year old boy at the time of Luffy's flashback, the same age as Ace at that time. He had a missing tooth and short curly blond hair. He wore a large black top hat with a pair of blue goggles wrapped around it, a blue jacket with the sleeves rolled up, a cravat and a pair of light blue cyan shorts held up by a belt with an elaborate flower-design buckle.
Before he entered into the Gray Terminal he was seen with a gentle outfit, with a white colored short-sleeved shirt and wearing blue colored shorts as usual.
He is protective of his dreams and goals as he agreed with Ace that the two of them had to kill Luffy so that he couldn't tell anyone about their treasure, though neither Ace nor Sabo knew how to kill a person nor had any experience, implying some degree of innocence despite their profession. He is very ashamed of being a noble, and even stated that he wished that he wasn't born one. He seems to, according to Luffy, be a nicer older brother than Ace. He seemed to approve of Luffy's powers, and even encouraged his improvement. He seemed to be able to make Ace and Luffy get along when they were fighting, making him the nice, diplomatic one of the trio.
Sabo's dream involved traveling around the world as a pirate. This is in order to write a book containing the story of everything he would have seen and every place he would have visited during his journey. One of the reasons behind all this could be the "segregation" that envelopes so much of the Goa Kingdom, a thing that could easily stir a freedom-loving spirit like Sabo's to ask himself what the world was really like outside the walls of High Town, and outside the island itself. However, he was ready to cast aside his dream for the sake of loved ones: Sabo was loyal to his friends, or in this case his two "brothers", to the point that he would give in to the demands of his father, becoming miserable and "alone" in order to save both Luffy and Ace.
Despite being the son of a noble, Sabo does not act like a stereotypical noble would act, nor does he consider himself to be a noble. He does not look down on the less fortunate nor does he put on airs about his status. This is in stark contrast to the rest of his family, who sees their status as more important than anything else and will do whatever it takes to raise their social standing or maintain their current status, as well as look down on anyone they consider to be inferior. Sabo rejects these values completely, and even went as far as to say that he feels ashamed of his status as a noble. This can be seen as the reason why he ran away from home and went to live in the Gray Terminal, he wanted nothing to do with his noble heritage. Since a child becomes a full-fledged noble at the age of eighteen, Sabo intended to leave Goa Kingdom at the age of seventeen, to escape the idea of being recognized as the thing he hated the most. He even refers to the nobles as "smelling worse than Trash Mountain, as they are people rotten to the core".
Sabo seemed to have some level of fighting ability, since he and Ace together were able to topple Porchemy when the two of them arrived to save Luffy; their preferred weapons at the time were pipe bo staffs. Sabo was able to beat Luffy fifty times in one day, as well as defeat Ace twenty four times and lose twenty six times.
He was fast enough to grab a knife from a pirate without him being able to stop Sabo. He was good at thieving as well, since he and Ace were able to rob so many people to get their money and valuables. He also was exceptionally skilled in stealth and could jump out of a window several stories up without injuring himself. According to Ace, who thought Sabo would become his navigator, the boy also had some experience in navigation.
You can download this cube paper craft model from here: The One Piece - Sabo Free Cube Craft Paper Toy Download