This cube craft paper model is the Sogeking (Alter-Ego), based on the Anime/manga series One Piece, this paper toywas designed by blackignus. Sogeking is Usopp's alter-ego developed during the Water 7, and Enies Lobby arc, when he left the crew. Later seeing the others trying to save Robin made him feel guilty for leaving, so he stated to Sanji and Franky that he cannot help them fight for this reason. He hastily 'disguised' himself in a mask and cape and began calling himself "Sogeking". The Sogeking mask is from the Sea Train Puffing Tom. As Sanji leaves the last car of the Sea Train the mask is visible sitting in an open suitcase.
During this facade, he sometimes dons a deeper voice to disguise himself, which can be seen as the "true" Sogeking. Sogeking also refers to nearly everyone with a "kun" suffix and when asked of the whereabouts of the 'Island of Snipers' he supposedly comes from, maintains that it exists "in your heart". As Sogeking, he changes the name of his attacks from Japanese to English, such as the "Firebird Star" when shooting at the World Government flag. Everyone except for Luffy and Chopper already knew that Sogeking was Usopp at the sight of Usopp's significantly long nose. Tamanegi, Ninjin, Piiman and Kaya were able to recognize him, though they claimed no one else in Syrup Village did.
As his alter-ego Sogeking, Usopp was able to fight alongside the others without having to deal with his departure. During his time spent acting as Sogeking, Usopp began to realize that while he was one of the weaker crew members, his role as the crew's sniper and a supporting crew member made him more valuable than he thought. Ultimately, he was recorded as Sogeking on his bounty. The fact that Usopp himself is not technically wanted allows him to slip through enemy lines seemingly undetected, as shown when Oars originally let Usopp go because Oars did not think Usopp was a target.
During his fight with Perona, Usopp started arguing inside his head with his alter ego over their situation. Once he put on the mask he gained the confidence that enabled him to defeat Kumashi. Whether or not Usopp is developing a multiple personality disorder is debatable and has yet to be confirmed by the author or within the story; though it is also possibly just a coping mechanism to help Usopp deal with the stress of the situation. During the Straw Hats' return to Sabaody Archipelago, when Usopp and Nami face four of the Impostor Straw Hat Pirates, Usopp sees the mask worn by the Fake Sogeking. While he says "Sogeking", it doesn't indicate whether he is merely surprised that someone is impersonating him or actually believes it is the real Sogeking. Although when he reunites with Chopper, Usopp and Nami tell Chopper that they are impostors.
You can download this cube paper craft toy from here: The One Piece - Sogeking (Alter-Ego) Cube Craft Free Download