The spawn of the Dark Side...

Who was the first dark lord of the sith?

Xendor is a name credited with being the leader of the dark Jedi in the schism that eventually led to the formation of the Sith. As for the first real Sith Lord, I couldn't venture a guess.

That's an extremely good question, but really, who could possibly know?

Ah wait... I recall. Yes. It's... Darth Janus. Yeah, that's him. One powerful mo'fo... amazing with a saber. Could Force push whole planets, etc. Just astounding.

His demise: death by banana. 💃

And so was the Sith ever defeated by the pure goodness and sappiness of... the dancing, smiling banana.

Curse you, Jedi. Curse you.

I'm going to say it was originally Revan who is the source of all light and dark.

Son is the first Dark Sider I can think of.

Ajunta Pall is the first Dark Lord of the Sith though.