Pocketbot

Pocketbots are small, insect-like automatons invented by Isaac Sumdac. Their exact function is a mystery, though they are each equipped with a tiny cutting laser and arms that convert into drills. The pocketbots are a bit of a failure, as Sumdac could never get them to work.

Fiction

Animated cartoon

When Megatron revived, he was able to transfer some of his energy to a pocketbot, taking control of it and using it as a spy. He slipped it into Sari's backpack upon learning she was heading to the Autobot base. Megatron used it to search for the AllSpark, but when the search ended with failure, he used it to transfer some energy to the factory's control station, allowing him to take control of the machinery in the Autobot base. After Bumblebee destroyed the console, Optimus Prime found the pocketbot. It escaped, only to be crushed by Bulkhead. Home Is Where the Spark Is