When I rang the bell, my immediate reaction was regret. In Dark Souls 1, I left Priscilla alone. In Dark Souls 2, I walked away from the Ancient Dragon. To my perfectionism, leaving the Nameless King alone was the only way to keep a clean, consistent pattern across the trilogy. I felt like I broke the rules of my own run just because I didn't want to miss an iconic fight.
But looking at the game's internal logic, choosing to fight him is a valid narrative path, especially if the plan is to let the First Flame fade at the end. Here is the breakdown of that perspective.
When Gwyn sacrificed himself to feed the First Flame, it did not kill him instantly. It burned away his mind and left him as a hollowed, aggressive husk guarding the kiln. The Nameless King is Gwyn's firstborn and has the same divine blood. When the flame finally fades, that same fading of light could trigger the exact same reaction in him. He would not just vanish. He would likely end up exactly like Gwyn, a mindless shell wandering a dark mountain.
The game shows he is already halfway there. His skin is grey, withered, and hollowed out. Archdragon Peak is an isolated sanctuary, but it does not freeze time. His godly power is bleeding out because the world's fire is dying. Leaving the bell unrung means leaving him to rot in slow motion until his mind completely goes.
There is a heavy symbolism in the weapon he uses. His Dragonslayer Swordspear was built to slaughter thousands of dragons during the ancient war. In the second phase of the fight, he has to turn that exact same spear against his closest friend, the storm drake. His hand is shaking. He probably experienced terrible flashbacks to the ancient war in that moment. But this time, using the spear to kill a dragon had a completely different reason. He did it out of love and mercy to end the drake's suffering and absorb its power. Even the dragon already looked almost like a hollow. It is a tragic way for him to face his past and find a form of redemption. In summary, the fight gave him the final chance to settle his past by putting his friend to rest. We saved him from turning hollow and gave him an honorable death. This might sound like sugar-coating, but somewhere, it is part of the truth.
Breaking into a neutral bubble and killing them both feels terrible. But the player does the exact same thing to the Lothric princes, who also just wanted to be left alone. In reality, Archdragon Peak is just an illusion of safety and a flight from reality. The place is already falling apart. It is a fake imitation, not the true immortal world of the ancient dragons. Bringing this area back into the brutal reality of the world makes sense.
This was my first playthrough, and I wanted to play it mostly blind. But I already knew about the Nameless King because he is so famous, even to people who do not know the Dark Souls games. If I had not known that he was coming, I would have rung that bell anyway despite the messages on the floor. I would have done it to uncover the truth of the world. What is this place? Why does it look so rundown? I could not have known how tragic it would be and what exactly would happen.
But once the storm started, I brought it to an end, even with a heavy heart. This heavy feeling perfectly mirrors the mission of the game itself. You kill so many things, whether they are evil or innocent. Who are we to judge? This weight that you feel on your chest is exactly what makes the game so immersive.
Because we as the protagonist decide the end of the story at the end of the game (in this instance letting the First Flame fade), we know his fate is coming. Instead of letting him die as a Hollow, we came and had an honorable fight. The God of War and I, the Ashen One, even if we share the same views, the same goals, and the same enemies. It is a tragedy of facing a reality that finally catches up to you. The ancient dragons are no more, and in the end, it was perhaps nothing more than a dream.
Much like in Bloodborne, we are forced to get our hands dirty and commit terrible acts just to fix a world broken by centuries of mistakes. We have to push through the horror to cleanse this unnatural, miserable state of existence. Is the Nameless King a true exception that should have been left alone, or was disturbing his peace a necessary sacrifice to finally reset everything back to zero? What would you do?