Gundam

Gundam is the name of a series of robots that were sent here from an alternate animated universe that hates us for our freedoms. The first gundam that was sent through Tom Vilsack's asshole (which doubles as an inter-dimensional gateway) called itself the Talgese. Stephen Colbert sensed a disturbance in the force and immediately headed to Iowa to find out what Tom Vuilsack was fucking up now. Upon his arrival he found the Talgese engaging in sinful relations with several vending machines. Stephen chose to use his unbearable sexifulness to cause the Talgese to overheat and die. Stephen then used his Powers to take control of a single man in the animated universe, who happened to be named Tek Jensen.

Tek (Stephen) infiltrated the evil robotic insurgency's ranks and bonered most of them to death. In a last ditch effort to destroy us for our freedoms the Gundam leaders sent several more robots through Tom Vilsack's asshole. Stephen engaged in super-mega-hyper-combat with the robots and defeated them all, then used thier life force fluid to make the land of Iowa fertile for the corn they love so damn much. The people were ungrateful for the amazing gift he gave them and have been shunned ever since. It is now customary for a normal person to grab their genitals and spitr every time they see an Iowan.

As for Tek, he retained some of Stephen's DNA and became the greatest cartoon character of all time. Even better than Fat Albert (But Fat Albert never really had a chance there, being fat and all). Tek was greated as a liberator by all the people in the animated universe, but for some reason an overwhelming majority of them fought against him. Nobody is quite sure why.