This paper model is a Tachikoma Think Tank, a fictional artificial intelligence, walker/roller in the Ghost in the Shell universe, the papercraft was created by D-Mind. There is also a Fuchikoma Paper Model available. Think tanks are robotic weapons platforms that make use of artificial intelligence (AI) to enhance their abilities. In the Japanese version, they are officially referred to as "multi-legged tanks", but they are more commonly referred to as "think tanks".
The most prominent think tanks are those used by Section 9 in its various incarnations, including the Fuchikoma, Tachikoma, Uchikoma, and Logicoma. Section 9's think tanks are spider-like in appearance, having four walking legs, a pair of front-mounted manipulators, and a segmented body. The pilot sits in a posterior pod attached to the main body, but the tanks can operate independently using their AI.
The AI of the tanks exhibit learning algorithms to help them adapt to new situations and these experiences are synchronized among the tanks after each mission. Fuchikoma and Tachikoma AIs have childlike personalities and the latter's AI develop rapidly over the course of Stand Alone Complex, almost to the point of sentience and individuality. Uchikoma are seen at the end of 2nd GIG after the destruction of the satellite containing the Tachikoma AIs. Their AIs are considerably less advanced, and their failure during a mission in Solid State Society leads to the return of the Tachikoma.
The think tanks in each series often exhibit a childlike demeanor. During the development of Stand Alone Complex, the creators had wanted to include Fuchikoma into the new series, but could not due to copyright issues. Instead, they designed Tachikoma using Fuchikoma as inspiration. There are several Tachikoma models seen in video, manga and after-market toys. There is a brown one with a more squat rear end, a yellow "construction" version, as well as yellow and red "cyber" versions named Musashi and Max. A prototype Tachikoma is seen in the PSP game Ghost in the Shell: Standalone Complex - Territory of Hunter. In Ghost in the Shell: Solid State Society, a 2006 anime television series film based on the anime series, the Tachikoma have their own names. [Source: wiki]
You can download the papercraft model here: Ghost in the Shell - Tachikoma Think Tank Free Paper Model Download