Onslaught (Transformers)

"You need a bigger door!"

- Onslaught's disappointment before freedom

Onslaught is a supporting antagonist of the 2017 film Transformers: The Last Knight. He is a Decepticon tactician who transforms into a green and white Western Star 4900SF tow truck.

Role
Onslaught was in T.R.F.'s custody when the T.R.F. formed a deal with Transformers to release some Decepticons to be part of his "crew". Among Megatron's first choices was... Berserker. However, Berserker was deemed too dangerous, so Megatron had to settle for Onslaught, who needed high level clearance to be released. When cleared for release, he threw his gun out the door but then realized he won't be able to get out, and angrily bemoaned the small size of the TRF's doors then lashed out at his human jailers.

Onslaught joined the Decepticons on their hunt for Cade Yeager, and followed his leader to the human's scrap yard and then to a nearby town. They were met with some not-quite-unexpected resistance in the form of the Autobots Bumblebee, Drift, and Crosshairs and damaged in a trap set by Yeager. With Grimlock keeping all the other Decepticons busy, Onslaught tried to go after Cade on his own. He attempted to catch the fugitive human but was ambushed by Drift and Crosshairs. He first lost his leg and took several shots in the chest before finally losing his head to Drift's sword. Drift remarked his victim had a fat head.

Trivia

 * Despite his huge size, Onslaught is one of the most incompetent Decepticons in the film series, as he easily lost his head and leg in a matter of seconds in battle with Drift and Crosshairs. Even so, Megatron originally wanted Berserker into his crew instead of Onslaught indicating that Megatron knew Onslaught would be a worthless asset to him.