Ronan the Accuser briefly holds the dangerously lethal Power Stone in Guardians of the Galaxy, yet he survives, despite the stone killing most beings who touch it. As one of the MCU’s six Infinity Stones, the Power Stone is one of the most dangerous objects in the universe, and it’s shown to hold too much power for most beings in the film. Ronan’s species and the time he spent handling the stone explain his survival, however.
The Power Stone was central to the plot of Guardians of the Galaxy, with various parties, including Ronan and the fledgling Guardians themselves, seeking the gem. The Power Stone, fittingly, seems to have the most intrinsic power of all the Infinity Stones, and Ronan sought to use it against Xandar. The stone was finally acquired and used by Thanos in Avengers: Infinity War to kill half of all life in the universe, but The Avengers used a version of it in Avengers: Endgame to resurrect everybody killed by the Mad Titan.
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Rather than giving the Power Stone to Thanos, Ronan uses it for his own nefarious goals in Guardians of the Galaxy. Grabbing the Power Stone from its housing, The Orb, and struggling to contain its power for a time, Ronan places the gem in his weapon, the Cosmi-Rod, allowing him to use its power safely. Ronan’s brief time holding the Power Stone, however, can be explained by his heightened Kree durability and the fact that he only spent a few brief moments holding the Infinity Stone. The Power Stone is extremely dangerous to handle for most beings, as shown when Carina dies almost instantly upon picking up the gem. Carina was a Krylorian, a humanoid species whose physiology appears quite similar to a human’s.
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