Well, it varies depending on the comic series. Sometimes, it's been a combined effort of multiple superheroes like the Fantastic Four and others. Each encounter has its own unique circumstances and outcomes.
Galactus' fate in the comics is complex. It's not straightforward to say who exactly killed him as it often involves multiple factors and characters coming into play. Different storylines present different scenarios.
It depends. Some people might think so if they don't have much interest or if the variants don't offer significant value. But for collectors or hardcore fans, they can be quite valuable.
One way to get variant comics is by following the social media accounts of comic publishers or artists. They might announce limited releases or special offers for variant comics.
A 'variant' in comics is basically a special or alternative form. It could be a comic with a unique cover art, or maybe it has some tweaks in the story or illustrations compared to the regular release. They often add excitement and collectibility to the comic world.