Do we have any immortal characters?

Well by dictionary definitions Immortal is:

living forever; never dying or decaying.

Invincible is:

too powerful to be defeated or overcome.

Invincible is more synonymous with being "unbeatable" rather than "unkillable". Granted these things are malleable and up for interpretations, especially in a fantasy universe where the rules are made up, but this is what I'm going with.

[{quoted}](name=Vistha Kai,realm=EUNE,application-id=6kFXY1kR,discussion-id=wyviaIZf,comment-id=00080001,timestamp=2016-11-05T16:29:29.660+0000)

That's being immortal and invincible.

Immortal is being unable to die of internal causes, such as old age. Invincible is being unable to die of external causes, such as an axe to the face.

Yordles for example are immortal (at least in this excuse for a lore we got now). Xerath would count as one too. Other ascended most likely are too and as far as I know there is no information saying otherwise. After all Nasus and Renekton are about 2-3 thousand years old "now".

There is also being Timeless. The old gods of the Vikings were all immune to the ravages of time, but famously quite capable of being killed through violence. Same thing with the Greek pantheon (and many more, I am sure).

Aye I concede on both points, especially the Ascended point, especially considering that's what's been happening to Nasus; weakened by age.

If I remember rightly it's part of his job description, but I'ma reread his bio just in case.

Rummaging through lore archives

Yeah he's slain demons:

Enforcing that equilibrium was its own struggle. For the task, Shen carried two blades on his back. One was an Ionian steel saber that could cleave through a person in one blow. The other was a sword of pure arcane energy. It was used for dealing with spirits, and had been passed down through many generations of Shen’s ancestors. He had slain countless demons, ghosts, wraiths, and sprites with it over the years, and fully expected to take one more before the day was done.

Oh yeah his bio was updated with his VGU.

Since he got his stupid blade apparently.

{quoted}

Skaarl is a particular drakalops-- only know to be with Kled. There are others. Yes, Drakalops are totally immortal and unkillable. Drakalops are said to be the cause of the mysterious winds in Noxian deserts and on the high plains that gust and then instantly disappear.

Think of it from the context that Kled reflects professional Noxian soldiers and Skaarl reflects the Noxian landscape and irregulars. But together they reflect the idea of battle hardened courage and friendship.

He is as old as the universe itself,so I doubt he really has an age limit.

[{quoted}](name=Chromatic Eagle,realm=NA,application-id=6kFXY1kR,discussion-id=wyviaIZf,comment-id=00010000,timestamp=2016-11-05T16:09:41.804+0000)

I thought even AS was implied to have an age limit.

He's been around since the dawn of creation I'm sure he'll die of old age any second though /s

[{quoted}](name=Chromatic Eagle,realm=NA,application-id=6kFXY1kR,discussion-id=wyviaIZf,comment-id=00050000,timestamp=2016-11-05T15:59:46.365+0000)

Ryze can live forever? I assumed he was just long lived. Did Riot mention Yordles? I think they said so about Ivern, but obviously undead are immortal. Most of the time. We don't know about Zac do we, and Anivia reincarnates but we don't know if there's a limited amount of cycles. Not sure about Aatrox.

Im not sure if Ryze is inmortal or just long long long lived.

The yorldes are in a weird spot right now, Riot said that they are "timeless"... However we dont know if they can die since they are also considered "Spirits"

Zac is basically a bunch of cells, as long as 1 of those cells live, he will regenerate himself. Of course that the cells arent inmortal, but since he keeps creating more cells its safe to assume that he is "inmortal" unless you destroy all the cells of his body (Like Majin Boo).

And im not sure about Aatrox and Anivia as well, but we know that he can be killed (since there are only 5 of his race left)

{quoted}

Ryze probably can't die because of natural causes, but he can certainly be killed with force. The Yordles also can't die of aging, i same for Ivern, but Kindred and Bard too. The undead aren't guaranteed to be immortal (immortal = no death from aging, unkillable = no death at all), but they probably still are. Zac is just a biological weapon so he is also immortal or just very long lived, I think. Anivia can reincarnate indefinetely unless Freljord is destroyed, Aatrox is immortal, but killable.

Yeah, OP said "unless they get an ax to the face." wich means "unless they are killed"

{quoted}

I think Viktor, Sion and Urgot would need too much maintenance to be considered immortal.

Between the three, VIktor is self-sufficient enough to be considered immortal. Sion and Urgot are basically on life-support, requiring constant outside help to maintain themselves. Viktor on the other hand is responsible for his own transformation and definitely would be capable of taking care of himself.