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Big Junkheap is one of the Junkheap brothers and the leader of the Junkheaps.
Age Of Extinction
Junkheap was in a KSI factory of Beijing when Galvatron took over and was possessed with his brethren. Along with the other prototypes, he traveled to Hong Kong to detonate the Seed. When helping take the city, he split into three components to cover more ground.