Driller

The Driller is a kraken-like decepticon that has tentacle like drills on its body as well as its head.Drillers are a type of subterranean lifeform native to Cybertron, and some of the single most dangerous creatures on or under the planet's surface. So naturally, Shockwave keeps one as a pet.

The Driller, riden by Shockwave, attacks NEST at Chernobyl and steals the Ark engine part from them before heading to the surface where it engages Optimus Prime. Optimus manages to cut off a head of the tentacle carrying the part and Shockwave briefly emerges from the inside to glare at Optimus before he and the Driller leave without any further battle.

In Chicago, the Driller, shows up again with Shockwave, attacks the Autobots and separate Optimus from his trailer containing his weapons pack. Later, when Shockwave sees Robert Epps in a collapsing building, he sends the Driller to attack Epps, his team, Carly and Sam. The Driller smashes through the building and nearly reaches the team before Optimus shows up and attacks. Ultimately, Optimus crashes through the Driller, breaking it in half and killing it, leaving Shockwave enraged.