Galactus

Within Marvel continuity as summarized in the cited sources, Galactus originated as the mortal Galan of the planet Taa (Taaan) in the previous universe; at that universe's end he merged with the Sentience of the Universe and was reborn into the current universe as Galactus. Creators Stan Lee and Jack Kirby framed him mythically—Kirby described going "to the Bible" for inspiration and called Galactus one of the "first gods"—and Lee emphasized that the character was intended as a demi-god "beyond mere good and evil," whose need to feed on living planets is a primary motivating compulsion rather than simple malice.

Sources emphasize Galactus as a towering, mythic, helmeted/armored cosmic figure designed by Jack Kirby to evoke awe and biblical grandeur. Creator commentary and the original Fantastic Four presentation established him visually as a vast, armored figure with a distinctive helmet and costume intended to read as god-like and monumental, though detailed measurements and every visual nuance are not specified in the provided excerpts.

As described in the sources, Galactus is a cosmic entity who consumes planets to sustain his life-force; this compulsion is presented as a necessity rather than straightforward malice. He wields vast cosmic power, is able to travel between star systems, manipulate enormous energies, and create or employ heralds (for example, the Silver Surfer) to seek suitable worlds. The character is used narratively as a force that can alter planetary fates and to sustain the larger continuity of Marvel's fictional cosmos; sources characterize him as operating beyond ordinary moral categories and often beyond mortal judgment.