Originally posted by Branlor Swift
With help from Johnny being a herald, and Galactus's world eater tech.Doom did it with the Cosmic Cube, his tech, and the Cosmic Control rod.
And again with Klaw when Galactus was in the middle of absorbing his ship. Klaw apparently siphoned enough power that was able to battle PR Beyonder. I can't stress how much sense this didn't make, but what do you do.HE turned him into a brain that made absolutely no sense in any context.
Thanos did it by throwing two planets at each other with a nuke that was able to almost completely destroy Hunger (who eats dimensions and was tanking Galactus blasts).
Galactus also apparently couldn't teleport.Besides the Thanos and HE examples, they had some good help (although Klaw, again made no sense).
Geniuses is spelled wrong.
Johnny's energy powered Reed's device, but it was made of Quasar's quantum energy not worldeater tech. Reed was giving Quasar instructions like "put an ion converter here and make a mutagen resonator there to scan his genes". Now I know Quasar is into science but that's kind of advanced stuff to lay on him. Anyway, pretty weak story idea just being able to change him into a human. At least they stated they could only do it once, so that the same PIS couldn't just be used again.
Most of these examples don't make a lot of sense really. Thanos' wasn't even tech, just a big explosion - throwing even thousands of nukes into a planetary collision adds about as much as throwing a firecracker into an atomic blast to get a bigger explosion. And since Galactus can take blasts from beings who can one-shot planets, I guess he was just in a hungry state again by then (as usual).
Galactus should really be an immeasurably evolved genius way above these guys, but writers like Starlin often just write him down to a big guy with big blasts.