This papercraft model is the mecha called Lagann from Tengen Toppa Gurren Lagann anime. Lagann is Simon’s personal gunmen that he found while digging for his way out in the first episode of Gurren Lagann .
In Gurren Lagann Parallel Works episode 8, it’s revealed that the first Laganns were found by Lordgenome as a child during the Anti-Spirals’ initial assault on Earth long before Gurren Lagann anime series’ story begins. Unlike any other gunmen in this anime, Lagann has a unique cockpit and shorter than any other gunmen.
Gurren Lagann Mecha Papercraft requires 11 sheets of paper and comes in exploded and non exploded view. I wonder if exploded is the right term for it? Also coming next is Simon’s model.