Blight

Abstract
Sickness is the bane of every living being in the universe, organic or mechanical, and the Corrupticon known as Blight might as well be its avatar. As a carrier for the dreaded Rust Plague, mutated by the Dark Energon pumping through her body, Blight is rotten inside and out. Worse, she is all too happy to share her sickness with others. Thus, an encounter with her ends only one way for a Cybertronian: death. Just like the disease she carries, Blight is largely indiscriminate in who she kills. The only thing to ever override her lethal ambiguity is her seething vitriol towards medics. Disease will ever be at war with healing, locked in a tenuous struggle, and Blight intends to emerge the victor. With her toxic touch, and the virulence of the disease she carries, she might just succeed where the original Rust Plague failed."'Cure-All is dead, little nurse-maid. Only Blight remains!'"

Unleash the Beast
When alerts began coming in from first Junkion and then Velocitron that cases of Rust Plague had re-appeared, and that antidotes made prior were not working, panic resulted in the two colonies being cut off from physical contact.