The third episode of Prime Video's The Lord of the Rings: The Rings of Power is now streaming, and a certain development on the island kingdom of Númenor might just confirm a fan-theory about Galadriel's enigmatic traveling partner!
Because Halbrand (Charlie Vickers) is a brand-new character, there had been some speculation that he could be revealed as Sauron. While this now seems highly unlikely, it's looking increasingly possible that he will turn out to be The Dark Lord's most powerful servant.
While exploring with Elendil, Galadriel recognized the same symbol Halbrand wears around his neck, and comes to the realization that he is actually the king (or the rightful heir, at least) of The Southlands. Judging by its position on the map, this area will ultimately encompass Mordor.
You see where we're going with this? We reckon Halbrand will ultimately be corrupted by Sauron and become the Witch King of Angmar, aka the Lord of the Nazgul.
All we really know about the Ringwraiths is that they were once "great kings of men" before being given nine rings of power by the Dark Lord and falling into shadow. The Witch King was the greatest of the nine, and would eventually stab Frodo on Weathertop, kill King Theoden during the Battle of the Pelennor Fields, before finally being destroyed by Eowyn.
There's a chance things will play out differently for Halbrand, but we'd put money on the guy betraying Galadriel and joining Sauron's forces at some point. It may not happen this season, but keep an eye out for any signs of darkness or doubt creeping in over the next few episodes!