Ultimately , the producers decided to forgo a plot involving the planet - eating Transformer , and no further comments were ever made on the subject .
Unicron is briefly shown in a secret Transformers 3 preview feature in the Revenge of the Fallen Blu - ray Disc .
The producers decided to forgo a plot involving the planet - eating Transformer , and no further comments were ever made on the subject .
Unicron is briefly shown in a secret Transformers 3 preview feature in the Revenge of the Fallen Blu - ray Disc .