This article requires cleanup to meet the quality standards of Teletraan I: The Transformers Wiki. Please discuss this issue on the talk page or append this tag with a more specific message. This article has been tagged since November 2007.
This article is about Optimus Prime's melee weapon. For Andalite Animorph, see Ax.
The Energon axe is an iconic weapon used by Optimus Prime whenever he needs a melee weapon. He retracts his hand, and an emitter for the energy axe projects the blade. Despite only using it when he and Megatron are fighting on a particular dam, it was a very memorable ability, so much so that recent rereleases and redesigns of Prime's toy have actually included the axe as an accessory, either replacing or covering a hand.