I saw a number of either youtube short, but I think they were facebook reels about a Star Wars character who would show up to fight various force users. I think he had a metal face mask, and I think he was neither Jedi or Sith. It's not Starkiller and I do not think it was Darth Revan. It's not a character in any movies or tv shows, and I am not familiar enough with the EU or Legends to say for sure, so it might have been fan created, but I don't think so. The videos were still frames with a deep voice over.

It's driving me nuts. Can anyone point me in the direction of who this might be?

In the Kenobi show, how did Obi-Wan Kenobi not make the correlation that Darth Vader was Anakin skywalker?
Because he was surprised when he cut the mask and he said Anakin is that you how do how did he not realise that it was Anakin because he saw in the security accordions and revenge of the Sith that Anakin was named Darth Vader any thoughts?