Also known as: アークグレンラガン
A combination of Gurren-Lagann and a thermospheric survival platform known as Arc-Gurren. The Arc Gurren-Lagann resembles the Gunbuster, another giant mecha produced by GAINAX.
It is capable of sustaining a small population of people and animals in low earth orbit for at least a year, and contains an array of large-scale defensive systems and weaponry.