“Evil is not an absence of good. It is not a choice. Evil is one of two forces in the cosmos, an agency locked in eternal struggle against its antithesis. Only good and evil exist. And not even a hair’s width of space separates them” - Vecna
History
After clashing with the Vecnan cultists in the Neverdeath Mausoleum, Varin recalled some information about The Whispered One.
Vecna was an evil child with his tendencies only empowered by his equally evil mother. His mother eventually died fuelling Vecna’s hatred for gods.
Vecna is an Archlich recently ascended into godhood. He is obsessed with the acquisition of secrets, believing that they are the true power to the universe. Hundreds if not thousands of years ago, Vecna met Kas. Kas admired Vecna’s sadism and thirst for power, while Vecna valued Kas’s ferocity and cruelty. Kas quickly became a high ranking lieutenant and Vecna rewarded him with many gifts such as his immortal vampire body and the infamous Sword of Kas.
As Vecna grew old, he refused to let his mortal body prevent him from enacting his plan and communed with The Serpent to become a Lich gaining an immortal body
At some point in the Future, Kas betrayed Vecna resulting in a legendary battle in the Liches tower. Kas killed Vecna but was flung across the multiverse. Kas lost his sword and Vecna lost his hand and eye.
Present Day
After disrupting the Ritual in Neverwinter, Vecna showed himself and attacked the players. After a pathetic attempt from the heroes to stop Vecna he banished them into the Shadowfell