The Rings of Power Season 2 is Already Facing a Big Problem
Well, several big problems, to be honest, but we'll cover one of them for now.
Adar, the Elf/Proto-Orc who led his children, the Orcs, into the Southlands and created a home for them in the newly named and created Mordor, was speculated to actually be the current identity of Sauron for a time. But it was revealed pretty quickly that not only he is not Sauron, but actually is antagonistic towards Sauron.
Adar blamed him for cruelly experimenting on the Orcs, and even claimed that he had killed Sauron.
But on that latter point Adar was clearly mistaken. Or, at least, Sauron refused to stay dead. By the end of Season 1, actual Sauron, who was masquerading as Halbrand for most of the season, assumes his former identity and returns to Mordor, clearly intending to take over. A confrontation between Sauron and Adar in Season 2 is, therefore, inevitable.
The problem is, the outcome of that confrontation is obvious. We already know that Sauron will re-establish himself as the Dark Lord threatening Middle-earth soon enough. Therefore Adar is inevitably going to lose, the only question is, how swiftly and badly.
Adar managed to survive his first encounter with Halbrand-Sauron in Episode 6, and did not even recognize Sauron's current form. Then he unwittingly executed the scheme to create Mount Doom and turn Southlands into the blasted wasteland of Mordor – which Sauron almost certainly hatched long before the start of the series – because he wanted to make a land where the Orcs won't be tormented by sunlight.
But now he no longer has whatever usefulness to Sauron's plans he might have had previously.
Of course, Adar at least believes himself powerful enough to kill Sauron, and for now he has loyalty of all the Orcs in Mordor. They do not hold any warm feelings for their old overlord, if they even remember him, and they seem to be genuinely devoted to Adar.
It would have been quite interesting to speculate what's going to happen next… if we didn't know that Sauron is going to establish his dominance, one way or another. The only question is – would he kill Adar, control him, or perhaps send him on the run.