This paper toy is a chibi Keiji Maeda, a character first introduced in the video game Sengoku BASARA 2, the papercraft created by smilerobinson. Keiji Maeda is Maeda Toshiie's and Matsu (Maeda Toshimasu Armor Paper Model) 's adopted nephew, and occasionally fights with them. He has a mysterious past with Toyotomi Hideyoshi and Takenaka Hanbee which was touched on in Sengoku BASARA 2 Heroes.
Keiji is what people call a happy-go-lucky man. He enjoys festivals, as well as pulling pranks on Toshiie and others. Despite his demeanor towards his adopted family, he loves them, though sometimes shows resentment towards them due to their objection to his lifestyle. Accompanying him is a small monkey named Yumekichi. He receives a three-stage gaiden in Sengoku Basara 2 Heroes, where he used to be friends with Toyotomi Hideyoshi, but loses him due to Hideyoshi's lust for power.
In Sengoku BASARA 3, after the death of his former friend Hideyoshi, Keiji joins the ranks of the Uesugi army, under his close friend Kenshin. In his default paths, Kenshin asks him to him to run an errand to deliver a message to Saika Magoichi, telling him to stop by the Maeda's on the way there. Upon meeting Magoichi, Keiji falls in love with her at first sight, and the remainder of his path is devoted to following her and attempting to protect the woman, much to her ire. Like Magoichi's path, this means that the player and Keiji will join either the Eastern Army or the Western Army. Depending on the player's choices and the paths they follow, in the end Keiji can return to the Uesugi, return to the Maeda, or join Magoichi and the Saika.
Keiji's story is unlocked by finishing the first story of Date Masamune. Additionally, he can be unlocked an ally when the player defeats him as Magoichi. As an ally, he has a special ability: Damageproof, which reduce damage taken from enemies up to 20%. Pressing the Select button will cause him to dance and say "Anta mo odotte, odotte!"
In Sengoku BASARA 4, Keiji's taken up Toshiie's position and is now the head of the Kaga clan and the commander of the Maeda Army. [Source: wikia]
You can download the paper craft toy here: Sengoku BASARA - Chibi Keiji Maeda Ver.2 Free Paper Toy Download