Hyperspace Mallet

When Sari used her AllSpark Key to upgrade herself into a more powerful form, one of the many weapons she gained was the Hyperspace Mallet. This powerful, retractable energy hammer is interchangeable with the Masterblade stored within the same compartment in her fore-arm

Notes

• The term "Hyperspace Mallet" refers to instances in cartoons where a character is able to produce an improbably large weapon from nowhere for comedic effect. Many western viewers would be most familiar with this trope from classic Looney Tunes shorts, or similar cartoons. Hyperspace mallet at Tvtropes.org