The Beast (Transformers)
The Beast is a Combiner exclusive to the UK Transformers comic story Transformers: The Beast Within, composed of the five Generation 1 Dinobots: Grimlock, Swoop, Slag, Snarl, and Sludge.
The Dinobots formed the Beast due to the Autobots being outnumbered by the Decepticons and their force of Combiners, including Predaking. The monstrous Combiner decimated the Decepticon forces but then went on an out-of-control rampage. Unable to separate or reason with it, the Autobots were forced to destroy the Beast as well as their former comrades.
"Ask Vector Prime" later revealed that the reality where this took place was later attacked by Unicron, with the Transformers putting up only a pitiful resistance due to so many of their forces being decimated. His actions struck a fatal blow to that reality's manifestation of Primus, ravaging that dimension greatly before it was eventually consumed by the Hytherion. 
- Grimstone-a Combiner from the films toy line.
- Mega-Dinobot-a combination of Grimlock and Swoop from the Transformers: Energon toy line.
- Volcanicon and Obsidian-two dinosaur themed Combiners from the Kre-O Transformers line.
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