This article is about the quest. For the dragon, see Paarthurnax (dragon).
 Quick Walkthrough
- Talk to Esbern or Delphine.
- Kill Paarthurnax.
- Return to Esbern/Delphine
- Tell them Paarthurnax is dead.
 Detailed Walkthrough
 Initiating the Quest
This quest is given to you concurrently, or after The Fallen if you talk to Delphine or Esbern.
- Esbern - After you complete Alduin's Bane and defeat the World-Eater in combat, you may consult with Esbern to learn of Alduin's whereabouts. This begins the quest.
- Delphine – If you have not yet spoken with Esbern or Delphine at Sky Haven Temple, when the Season Unending conference is held, Delphine will approach you and start the quest automatically. You can avoid her if you exit the conference room quickly. If you do get stopped by her, you can refrain from making any selection and wait for the dialogue box to disappear and then leave. If you have finished the Civil War questline, Season Unending won't be triggered.
 The Stakeholders
Delphine and Esbern have discovered that Paarthurnax is the Master of the Greybeards and an ancient enemy of the Blades. You can argue in Paarthurnax’s defense, but both will reiterate the war crimes and atrocities committed by Paarthurnax. In addition, Delphine thinks that his betrayal of Alduin actually makes him worse, because it could mean that he might betray the Dragonborn in turn. They will tell you that that their oaths as Blades prevents them from giving you any further help until you kill Paarthurnax.
If you go to Arngeir and tell him that the Blades want Paarthurnax dead, he will tell you that - although what Esbern said is true - it was because all dragons were in league with Alduin at first, and that Paarthurnax could not help it. He will go on to say that Paarthurnax did eventually rebel against Alduin, and was instrumental in Alduin's first demise. You are given the option to tell him that Paarthurnax must die or that you are going to spare the dragon. This will affect the conversation between Delphine and Arngeir if you are forced to negotiate a treaty in Season Unending.
Alternatively, you can go to Paarthurnax at the Throat of the World. He acknowledges that all dragons thirst for dominance and that the Dragonborn shares this thirst, though he believes that he has overcome this genetic predisposition through the sheer power of will and that he can be trusted.
 The Choice
Paarthurnax is an easy foe for those who are leveled sufficiently; comparable to the average Frost dragon. You will receive a dragon soul and the usual set of dragon bones and dragon scales upon defeating him. Killing Paarthurnax will enrage Arngeir who, if you return to High Hrothgar, will angrily lecture you on your decision and even go so far as to threaten violence if you do not leave. After this, the other Greybeards will also fail to acknowledge you. On the other hand, the Blades will talk to you again.
If Paarthurnax dies:
- Arngeir retracts the Greybeards' hospitality, and it is no longer possible to ask him for the locations of word walls.
- Paarthurnax will no longer be around to provide meditation bonuses to certain shouts. If you already have a bonus it will not go away; you will just be unable to change it.
- Taking anything from High Hrothgar will count as stealing.
- The Blades will welcome you once again and support you on Dragon Hunting missions.
If you let Paarthurnax live, there will be a short scene with him after you have defeated Alduin for good, and he will tell you that he will try to round up the other dragons and bring them into the Way of the Voice, teaching them how to be peaceful. However, this does not make gameplay any different - some will attack and some won't unless you attack them.
If Paarthurnax lives:
- Arngeir will still disclose the location of word walls.
- Paarthurnax will still provide meditation bonuses for shout words.
- Paarthurnax will appear for an extra cutscene after Alduin's defeat, wherein he details his plans to rein in the dragons and teach them to live under the Way of the Voice. After this the quest will disappear from the journal.
- Taking anything from Sky Haven Temple will count as stealing.
- Removing items from some containers in the Sleeping Giant Inn will count as stealing and you will lose access to the free bed there.
- If you have not brought three people to the Blades already, Delphine's recruitment quest will remain uncompleted, or will become unavailable if you have not started it. However, it is entirely possible to recruit three followers for Delphine and receive the Dragon Infusion potion from Esbern before being given the quest to kill Paarthurnax.
- If you have not already obtained the potion from Esbern's Dragon Research, you will be unable to do so. However, the period in which you need to complete the recruitment and receive the potion is between the quest Alduin’s Wall and reading the Elder Scroll step of Alduin's Bane.
- The only real consequence of not killing him is no longer having dialogue with both Delphine and Esbern, and thus no longer having the option to go on Dragon Hunts with your recruited Blades. They still, however, act like regular companions.
The Blades do not reward you upon your return after killing Paarthurnax. Most of the gains come from the varied loot you find when searching Paarthurnax upon his death.
- Because Delphine and Esbern are always essential characters and cannot die it is not possible to kill them to protect Paarthurnax. As there is no way to actually reject the quest (aside from ignoring the Blades), once this quest is started, there is no turning back.
- If this quest is obtained during the main questline and is not completed prior to finishing the main quest, it will disappear from your active quests. However, you may still kill Paarthurnax at any time after this point; the quest will now reappear in your journal and can be completed normally.
- It is unclear why, but Paarthurnax's health will sometimes regenerate, making it impossible to kill him. At what point in the game the regeneration begins and ends remains to be determined.
- It is possible to bypass this bug by attacking Paarthurnax with Mehrunes' Razor.
- Fast traveling away and back when Paarthurnax's health meter is empty may trigger Paarthurnax's death.
- Ordering a follower to attack Paarthurnax may circumvent this bug.
- Often, Delphine will still allow you to recruit followers even after you have been told to kill Paarthurnax. Therefore, it is perfectly possible to complete that quest and not kill him.
 Quest Stages
- The following empty quest stages were omitted from the table: 10, 15, 30, 150.
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