Knuckle-spikes

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Knuckle-spikes are weapons from the live-action film series continuity family.

Knuckle-spikes are among Optimus Prime's vast arsenal.

X Gon' Give It To Ya!

Fiction

Dark of the Moon film

During the Battle of Chicago, Optimus used his knuckle-spikes to punch Shockwave through the abdomen, weakening the Decepticon. Dark of the Moon