|This article is about a/an treasure in Power Rangers Operation Overdrive.|
Mjolnir, also known as Thor's Hammer, is the legendary hammer of Thor, the Norse God of Thunder. Moltor found the Hammer's location with an Ancient Map. The Rangers raced Moltor in an effort to retrieve the treasure while in a unnamed rainforest in Norway. The hammer had the ability to increase an item to incredible size, and possesses a powerful lightning attack. Moltor used the hammer powers to increase his Lava Lizards to be larger than the DriveMax Ultrazord. Mercury Ranger regained the Hammer to even the odds. Ronny gives the Hammer to Thor to help her friends. After the brief battle, Thor decides to keep the Hammer. When the real Thor arrives, the fake Thor turns out to be Loki, who has been seeking the Hammer for a long time. Loki, disguised as Thor, tried to use the Hammer on the rock structure in Mexico, but the attempt failed. By combining the two weapons to blast the rock structure, the Rangers successfully recovered the next artifact.