Galactus is the OG planet eater from the Marvel Universe. While the purple one (no, not Prince) has been a part of Marvel Comics since the mid-1960s, his presence in the movies has been a bit cloudy. Literally. Galactus’ first live-screen cinematic appearance, in 2007’s “Fantastic Four: Rise of the Silver Surfer,” was as a giant cloud of swirling space debris large enough to swallow the Earth. While Galactus’ familiar big-horned form is briefly seen, he is blown to smithereens by the Silver Surfer, so we don’t know how big he is exactly.
In the comics, Galactus usually looks to be no more than 50 feet, so he’d barely be able to look over Godzilla Earth’s big toe, though his numerous powers and floating space fortress more than make up for his vertical impairment. Galactus may be that “small” in “Fantastic Four: Rise of the Silver Surfer,” with the sinister space cloud simply being his surroundings, but we’re not sure, so we’ll give the big guy the benefit of the doubt. So how big is Galactus in the movie, then? Well, big enough to swallow the Earth, so at least as big as Uranus.