Stormbreaker and Mjolnir
Having been bested by Thanos while traveling across the galaxy with his remaining Asgardians, Thor pursued the creation of a new weapon that would help him slay the Mad Titan. With Rocket Raccoon and Groot by his side, Thor went to Nidavellir, where the dwarf king Eitri helped him forge a new enchanted axe called Stormbreaker, which could summon the Bifrost.
Thor used Stormbreaker on Thanos, but was not able to kill him with it. Thor hit rock bottom after failing to take him out, but while traveling back in time during Avengers: Endgame’s “time heist,” Thor summoned a past version of Mjolnir and was able to wield the hammer again in Endgame’s climactic battle. He got a pleasant surprise when he learned that Steve Rogers could wield Mjolnir as well.
When Thanos was finally beaten, Steve went on a mission to return the Infinity Stones and Mjolnir back to the past. It is unclear whether he succeeded, but he didn’t have Mjolnir when he reappeared.
Jane Foster and Love
Thor carried on using Stormbreaker until his fourquel movie, Thor: Love and Thunder, when he ran into ex-girlfriend Jane Foster. Mjolnir had reforged and was being wielded by Jane Foster as the Mighty Thor. It turned out that telling Mjolnir to protect Jane created an enchantment on the hammer, and while Jane was in the guise of the Mighty Thor, she was protected from the effects of her terminal cancer.
Mjolnir displayed a kind of “shotgun” effect, splitting into the pieces Hela left it in and reforming after attacking multiple enemies. Love and Thunder also established that Mjolnir is sentient and chose Jane over Thor, which unsettled Thor and made Stormbreaker jealous of the hammer’s preferential treatment.
In the final moments of Love and Thunder, we discovered that Mjolnir had stayed with Thor and his newly adopted child, Love, after Jane’s passing. Thor and Love were seen charging into battle, with Thor wielding the reformed hammer and Love wielding Stormbreaker.
