Gundams
In the beginning of the series, five mobile suits, called Gundams, are sent to Earth from the orbital space colonies as part of Operation Meteor; a plan whereby rebels would be able to weaken the controlling influence the United Earth Sphere Alliance and the Organization of the Zodiac (OZ) held over the colonies. Although originally sent by the colonies, the Gundam pilots are more closely allied to each other than they are to any particular side in the conflict unfolding around them. As the series progresses, newer Gundams are introduced; some are upgraded versions of one of the original five, while others are completely new models:
Read more about this topic: List Of Mobile Suit Gundam Wing Mobile Weapons