Energon Hooks
From MediaWiki

As if an almost unbeatable arsenal was not enough, Optimus Prime also has his energon hooks, if he wants to make things more daring in ways that swords can't.
The energon hooks are extended from his forearms in the same manner as the swords.
Fiction
Revenge of the Fallen film
To help NEST combat Demolishor, Optimus Prime was sent to Shanghai by plane. Deploying from the plane that was transporting him in vehicle mode, Prime used three parachutes to reach the ground safely, whereupon he cut the parachutes with his energon hooks.
Prime later used the energon hooks again in his attack on Grindor, using them to tear the Decepticon's head apart. Revenge of the Fallen
Toys
Transformers (2010)
Voyager Class toys
- Battle Blades Optimus Prime (Voyager Class, 2010)
- For the Japanese release of this mold, the energon swords were replaced by the energon hooks.
Leader Class toys

- Optimus Prime (Leader Class, 2010)
- This retool of the Revenge of the Fallen Leader class Optimus Prime toy replaces the energon swords with hooks, and uses the head of "Buster" Optimus Prime. Other changes included new battle-damaged paint and a new voice box.

