The Nameless (銀の人, Gin no Hito, lit. Silver Man), also known as God (神, Kami) is the final boss of Earth Defense Force 5 and Earth Defense Force 6. The "God" of the Primer civilization, the Nameless is a gigantic silver humanoid with a glowing multicolored disc on his back. He possesses multiple stages and a variety of attacks which grow more formidable in each phase.
In EDF 5[]
The Nameless first arrived on Earth thousands of years ago, having originated from the far future. According to ancient legends, he arrived on a golden, egg-shaped ship, he could wield light and dance across the skies. The humans of that time worshiped him and the Primers as deities.
Near the end of the game, the remnants of the EDF decide to find the egg-shaped ship in a last, desperate attempt to stop the Primers from destroying humanity. As it turns out, the egg-shaped ship was the core of the Primers' command mothership. Once the core is exposed, the Nameless descends to the surface and fights Storm Team. After an arduous battle that almost led to the EDF enacting Operation Omega in an attempt to make a last stand, the Nameless was slain by Storm 1, driving the Primers to retreat from Earth, leading to humanity's victory.
In EDF 6[]
The Nameless' death shook the Primers to the very core. In their desperation to avenge his death and destroy humanity, they deployed a massive time machine known by humans as the Ring, to change the past and win the war. Despite this, the EDF kept defeating them, again and again, triggering an unstable time loop in which Storm 1, the Nameless' slayer kept being sent to the past and thwarted the Primers' time-traveling forces at every turn, leading to the EDF and humanity itself becoming stronger due to time alterations and stealing the Primers' tech for their own use.
At the end of the game, when the Ring is finally destroyed for good, the Primers unleash one final trump card: A dragon-shaped timeship sent from even further in the future. When the timeship's main gun is destroyed, a flower-like compartment reveals a horrific sight: The Nameless reborn, reduced to just his head and neck, merged with the ship and much bigger than before.
Having realized that for as long as the Primers continued to exist in the future, the war would never end and they would eventually destroy humanity as they saw them as a threat to their very existence, the EDF activated a new version of Operation Omega: The detonation of a missile full of contaminants and polluting agents on Mars, the Primers' homeworld. The pollution would alter the red planet in such a way that the Primers would never evolve on the planet, erasing them from existence forever and ensuring they would never threaten the Earth again. Despite knowing this was effectively genocide, the EDF did this anyway as they knew the Primers would never stop.
When the missile detonated, it triggered a time paradox. As the Primers had never existed in the new timeline, humanity never tainted Mars, which would've led to the Primers existing again and invading and destroying humanity. The only thing that could correct the paradox was the destruction of either of the two entities time itself chose as the living manifestations of the Primers and Humanity, who were respectively the Nameless and Storm 1. The effects of the paradox empowered the Nameless, making him manifest a halo around his head and redden the Earth's skies.
Despite this, Storm Team persevered once more, and with great effort, they dealt a final deathblow to the Nameless. Mortally injured, the Nameless tried to travel through time one last time, but failed and geysers of energy pierced his flesh. With one final explosion and roar, the Nameless was slain and the Primer race was destroyed once and for all, erased from existence. All that remained of them was their technology on Earth.