Super Spiral Universe

The Super Spiral Universe (超螺旋宇宙, Chou Rasen Uchuu) is a reality that is created within the galactic scale red demon god; Tengen Toppa Gurren Lagann. It is a space where thought becomes reality.

In the fight between Team Dai-Gurren and Antispiral, this was utilized by created several signature weapons of the team, such as the Tengen Toppa Superconducting Rifle, manifested by Yoko, and the Tengen Toppa Enki Sword, manifested by Viral, etc. It was even used by Lordgenome to recreate his original body, so that he may also be able to fight against Antispiral.

Source

 * 1) https://www.japanator.com/the-secrets-of-gurren-lagann-answered--6714.phtml