Also known as: ダブルオーガンダム, 00ガンダム, ダブルオーガンダムセブンソードセブンソード/G, ダブルオーライザー(粒子貯蔵タンク型), ダブルオーライザー
GN-0000 00 Gundam
Serial number GN-0000, it is the titular Mecha of the Gundam 00 series.
Uses two GN Drives in tandem to produce much better unit performance, and combines with the 0 Raiser to produce the 00 Raiser.
Like its predecessor, the Gundam Exia, the 00 Gundam is also equipped with seven melee weapons. Three of them (the dual GN Sword IIs and the switchblade-like GN Sword III) can switch between Sword or Rifle Modes to handle both melee and ranged combat, respectively. The GN Sword IIs has a broadsword-like appearance and as mentioned beforehand, the GN Sword III has a switchblade-like appearance and mechanism, which it inherited from Exia's GN Sword.
Has a Mobile Suit Variation called the 00 Gundam Seven Swords/G.
Piloted by Setsuna F. Seiei.