Decoy (G1)

And the Decepticons are none-the-wiser.

Decoys were small, one-piece statuettes of Transformers made from molded rubber, good for erasing pencil marks, chewing, and fooling extremely stupid enemies. They were packed in as a free bonus with certain Generation 1 Transformers toys.

From Teletraan I: The Transformers Wiki, a Wikia wiki.