Insecticon (Prime)

Insecticons are Decepticons sentries stationed on Cybertron following the Great War, with the intention of keeping a look out for the Autobots should they ever return.

Prime cartoon
An Insecticon stationed near Kaon was activated upon the arrival of Arcee and her human companion, and began tracking them into the city.

Later, it attacked when they uncovered the entrance to the Vector Sigma Chamber. Arcee engaged it, but the much larger bot was able to fend off her blows easily, and eventually knocked her out by slamming her into a wall. The Insecticon then tore its way through the entrance to Vector Sigma and began tracking Jack. It found him at the database, and was preparing to attack when it noticed the Scraplets feeding on the machine. While the Insecticon was frozen in fear, Jack turned the Scraplets on it, and they began feeding upon it, causing its limbs to detatch and fall into the pit below.