The Arc-Gurren (アークグレン, Aku-Guren Arc-Gurren?), named by Rossiu Adai, is one of Lordgenome's Gunmen battleships, a Dai-Gun, which his armies used when he was a Spiral Warrior during events prior to the series. It is enormous in size and comparable to the Dekabutsu. It is initially used to gather hundreds of thousands of animals and people onto it to escape world-destroying events later in the series. It uses Spiral Power 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.