You knew it was impossible to avoid - "Transformers"-themed Halloween costumes. With Optimus Prime costumes showing up in the U.K. and state-side as early as February of this year, things were going to explode especially with the creepy night creeping up quickly. Here are at least four new costumes to choose from, according to some recent eBay auctions.

First, there are costumes that consist of a mask and vest, with characters including Megatron, Optimus Prime, and Bumblebee.

The second are full "3-D" costumes, which feature also feature the characters of Optimus Prime, Bumblebee, and Megatron, each with a full suit with 3D chest plate, shoulder pieces, attached boot toppers, gloves, and a mask.

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