Energon Hooks

And there, on the eye socket, was a hook! Ooooooooooh.

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.

Dark of the Moon

Voyager Class toys

• Optimus Prime / Includes Deluxe Class Comettor (Multi-pack, 2011)

This Walmart exclusive release of Optimus Prime is the 2010 Transformers toyline "Battle Blades" Optimus Prime toy, released in the United States for the first time with the Japanese release's hooks (instead of swords), among other changes.

This exclusive has a peculiar and common error in that the arm hooks' hubs stick out farther than they should, causing a gap that runs down the middle of the cab's nose in vehicle mode.

Merchandise

Dark of the Moon

Dual Model Kit

• Optimus Prime (2011)
  • Japanese ID number: DMK01

Battle Hook parts (from Revenge of the Fallen) are available if ordered through Toys"R"Us Japan.