Arc-Gurren

Named Arc-Gurren (アークグレン, Aku-Guren?) by Rossiu, this is one of Lordgenome's Gunmen battleships, a Dai-Gun, which his armies used when he was a Spiral Warrior in events prior to the series. Enormous in size, it is initially used to gather as hundreds of thousands of animals and people onto it as possible to escape world-destroying events later in the series. It uses Spiral Energy to run and only recognizes Lordgenome as its operator. It is capable of going into space for at least a year, and contains an array of large-scale defensive systems and weaponry.