20The Originals and the Immortals
Although Silas was a witch, he drank an immortality potion thousands of years before some of the Originals, making him a much older immortal.
With their first appearance on The Vampire Diaries, the Originals are introduced as the first immortals. Kol, Finn, Elijah, Mikael, and Rebekah are said to be more powerful and more ancient than any other beings seen in the show before.
This is all well and good until Silas’ introduction in season
Silas has a rather negative view towards the blood-suckers too, claiming they are simply poor impressions of himself. It’s unlikely then that the Originals were simply unaware of his existence, leading many to wonder why they were portrayed as all-powerful in the first place.