Here is a look at what happened when Galactus was briefly transformed in the Ultimate Universe from the Devourer of Worlds to the Bringer of Life.
Galactus is one of the Marvel Universe’s most well-known killers, deservedly earning the epithet “Devourer of Worlds.” Debuting in Stan Lee and Jack Kirby’s classic Fantastic Four #48, Galactus was born under the name Galan and hailed from a universe that predated the Big Bang. He gained his cosmic power by merging with an entity known as the Sentience of the Universe, thus becoming Galactus to survive the death of his world. Galactus is not so much a villain in the Marvel Universe, but rather a fixture of the cosmic order. Howeverm there was a brief time when his cosmic role was switched from that of Devourer to Lifebringer in a 2015 Ultimates 2 storyline by Al Ewing and Kenneth Rocafort.
After the post-Secret Wars recreation of the Marvel Universe, a new team of Ultimates began to take on cosmic-level threats to the Earth. Their first task was handling the problem of Galactus. The Devourer of Worlds has never been a clear-cut villain. He sometimes functions as protagonist and antagonist in equal measure, but his motives are usually beyond spite, ego, or general evil. This made him a wild card, a threat to the Earth that could arise at any given moment based on his mood. But Galactus is still a required part of the cosmic order.
To that end, the Ultimates came up with a clever workaround for the Galactus problem. Trapping him in his incubator, they altered Galactus’ nature, transforming him into the Lifebringer, the polar opposite of his original self. Galactus proved his new benevolent nature by restoring the very first planet he devoured. With the threat of a world eater gone, the Ultimates moved on and Galactus began a new, more heroic life. But not everyone was happy with his new state of being.
Galactus’ time as the Lifebringer brought him into direct conflict with Master Order and Lord Chaos, two other cosmic entities. They did not approve of Galactus’ new status quo and wished for him to revert back his original self. They brought Galactus before the Living Tribunal to be judged as an affront to the cosmic order. Galactus managed to sway the Tribunal by stating that the cosmic order of the new multiverse was still being formed, and thus, his new role could be beneficial instead of dangerous.