History
The Impossible Man gained the Infinity Gauntlet after the Silver Surfer stole it from Thanos. Thanos attacked the Impossible Man, but the Gauntlet protected him. Eternity and other Cosmic Beings requested the Gauntlet but Impossible Man doesn't want to and teleports him and the Surfer, first to nowhere to escape Eternity then to a completely different region of space.
To prove to the Surfer that he's capable of using the Gauntlet for good, Impossible Man reaches into Surfer's mind and soul and recreated Zenn-La. Travelling to the planets surface the two meet Shalla-Bal, Surfer's lost love. Her touch causes the silver shell to melt off, reverting Norrin Radd to his old humanity. Norrin decides that Impossible Man's intentions are true and that he has his blessings to continue using the Gauntlet. Impossible Man flies off to make people happy and right wrongs but ultimately decides to help himself first
Surfer finds Impossible Man dressed as a mobster with Galactus pinned to a giant bullseye. He explains that he could make it so that his Poppupian race is diverse and happy, but that's not much of a possibility considering Galactus had eaten the planet. Galactus is given the choices of vomiting up Poppup or experiencing the cosmic consequences. Surfer refuses to stand idly by during this, which angers Impossible Man.
He briefly turn into Roddy Piper and then turns into Ghost Rider and cycles towards Galactus, only to be stopped by Silver Surfer's plead. Surfer realizes that the Zenn-La the Impossible Man brought him to wasn't real. It's just something created from his mind. So by using the Infinity Gauntlet and Galactus' planetary knowledge, Poppup can live again. Impossible Man sees the logic and makes a deal with Galactus that in return for Poppup, he'll relinquish the Infinity Gauntlet.
Galactus makes it apparent that they can't just recreate the planet out of thin air. Zenn-La, being the closest planet in the area, needs to be destroyed and used as raw materials to recreate Poppup. Surfer doesn't like this, but if he searches for another planet, Eternity will catch up to them and fight Impossible Man. Surfer makes yet another sacrifice and lets Galactus destroy this fake Zenn-La.
Poppup is recreated and Impossible Man cries in joy. While he flies down to the surface, Surfer talks things over with his former boss. This new Poppup is just as much an illusion as the new Zenn-La, but there's a difference. Impossible Man needs the illusion and can easily accept it. Silver Surfer, on the other hand, would never accept the false Zenn-La, especially since he knows the real one is out there somewhere. In a way, Galactus was helping him by preventing him from living a lie.
On Poppup, Impossible Man gives his people individual personalities, resurrects the Elders of the Universe and relinquishes the Infinity Gauntlet. It's then that Silver Surfer discovers that all the Poppupians have the personalities, appearances (except for the green skin) and memories that match those of every superhero and villain on Earth.[1]