[ENDWALKER SPOILER!] On Zenos

[Bhearil]

Personally I agree with the Wol and Zenos mirror analogy. It doesnt not mean they are the same but they are twisted reflections of each other. On that sense no one understand them better than the other

Zenos reflects the darkest parts of the WoL that are mentioned on the DRK quests. They both enjoy the thrill of battle, the challenge to reach even higher, but the reasoning behind is not the same, because Zenos seeks only his own enjoyment, while the WoL even if part of them enjoy the fight itself they also have other reasons to do so and find their own satisfaction in other things like friendship, curiosity (Venat and the Wol are stated to have a huge curiosity) etc.

To Zenos he eventually comes to the realization that despite them being the same, the Wol is generally satisfied with their life instead of feeling dull and bored most of their time, so they not desperate like him for a rematch, specially when the WoL is focusing on the End of Days and Zenos is at most an annoyance. So he decides to help him out for several reasons:

Once the main problem is fixed the Wol wont have no reason to not fight him and if they still refuse he will acept his friend decision (Zenos DO have a sense of honor albeit twisted)
He finally look at himself and realizes how empty his existence is and on a sense he ENVIES the WoL because despite their power they found their place in life. The Wol has lots of things that give them pleasure while he only has a fleeting one.

Their final fight is not a combat but a dialog about their ways of life, powering both to the limit with the power of dynamis.

After the fight Zenos is defeated and feels vexed he still lost meaning that his way of life was wrong, yet he acepts it and asks the WoL about theirs. The teleporter was probably Zenos final act to his only friend because unlike him THEY did have things to do and enjoy their remaining life. It wasnt the place for them to die moreso when winning their clash of ideals

Zenos reflects the darkest parts of the WoL persona, parts that are usually supressed due to their morality (but still there like the DRK quests clearly show), while the WoL to Zenos eventually becomes what he could have became himself if instead of being isolated his entire life he found companions and learned to live

Their dinamic to me looks a lot like the relationship between Drizzt Do'Urden and Artemis Entreri