Optimus Prime vs Infected Specimen 4

Transformers prime: Dark Exiles AU

In this Alternate universe, Instead of leaving Cybertron ( During the Great War) with a normal ship, Vaporrage takes one filled with dark Energon ( In liquid form ), and years later ends up crashing it on the Isle, where the dark Energon ends up in the Isle’s rivers causing it to spread out all over the land and turning any Mutant/Specimen who drinks it into Terror mutants.