Demacian Vengence
It was only a few years ago when creator
took control over the voidlings. His plan was to use them to convert every sentient being into a mechanical monstrosity in the so called "Great Liberation".
He had the power to challenge a nation but not a world. He needed even more power, so he made a deal with Noxus; he would enhance all of their champions if they helped him take complete control of Zuan.
who had managed to seize power in Noxus, accepted the deal believing he could kill Viktor and take both Zuan and the Voidlings for the Noxus.
Viktor was mechanical but he understood human greed very well and was well aware of Swain's intentions. Whilst most of Noxus's forces were in Zuan Viktor took his voidlings and captured Swain, however he didn't change the outside only his mind.
was not fooled, he saw that Swain had not only lost interest in improving Noxus, but started focusing his military might strangely on the Freljord instead of Demacia. He realized what had happened when Zuan forces were sent to the Freljord at the same time; Viktor had stolen Swain's mind.
Darius would make Viktor regret taking Noxus, he has joined the rebel alliance who and Demacia in the fight for the Freljord. There Jayce improved upon Viktor's "adjustments" and thus was born Bioforge Darius. He swears he will kill Viktor, and release Swain's body from it's current state.
Plus he heard Riven works at the strip club at the rebel's bar now.