Personal Gunmen: Ainzer    Iraak Coega is a member of Team Dai-Gurren. He pilots a Gunmen that serves Yoko as a mobile rifle platform. Together, they assaulted Dai-Gunzan with the rest of the Team Gurren. The name of his Gunmen is Ainzer.    from wikipedia

In a far away future, mankind lives underground in huge caves, unknowing of a world above with a sky and stars. 
In the small village of Jiha, Simon, a shy boy who works as a digger discovers a strange glowing object during excavation. The enterprising Kamina, a young man with a pair of rakish sunglasses and the passion of a firey sun, befriends Simon and forms a small band of brothers, the Gurren Brigade, to escape the village and break through the ceiling of the cave to reach the surface, which few believe exist. 
The village elder won't hear of such foolishness and punishes the Brigade. However, when disaster strikes from the world above and the entire village is in jeopardy, it's up to Simon, Kamina, a girl with a big gun named Yoko, and the small yet sturdy robot, Lagann, to save the day. 
The new friends journey to the world above and find that the surface is a harsh battlefield, and it's up to them to fight back against the rampaging Beastmen to turn the tide in the humans' favor! Pierce the heavens, Gurren Lagann!

Seven years have passed after the battle of Teppelin... Humans have since reclaimed the surface of the earth and enjoy an unprecedented period of peace and prosperity. However, humanity's increasing population growth triggers the sudden emergence of an unknown, powerful enemy. 
The fearsome, manipulative power of the mysterious Anti-Spiral proves too overwhelming for humans to even fight back. When everyone becomes desperate and loses hope, Team Dai-Gurren members reunite to stand up once again!
(Source: Official US Website)

This is the story of a man who has yet to realize what destiny holds in store for him….

In the distant future, mankind has lived quietly and restlessly underground for hundreds of years, subject to earthquakes and cave-ins.  Living in one such village are 2 young men: one named Simon who is shy and naïve, and the other named Kamina who believes in the existence of a “surface” world above their heads. The destiny of these two starts moving drastically when the ceiling of their village falls in, and a gigantic “Gunmen” and a beautiful girl named Yoko, wielding a superconductive rifle, come from the surface. Together, Kamina, Simon and Yoko ride the mecha “Lagann” that Simon digs out of the ground, and fly up to the surface!

However, the surface is not the dreamland that Kamina envisioned. This world is ruled by the Spiral King and his army of beastmen. Kamina and Simon, along with their comrades, challenge the Spiral King in an attempt to change a desperate world to one full of hope for the future with Gurren Lagann!

A music video for the song "S.t.a.r.S" featuring Marina Inoue as Yoko.