Taken from the in-game book "Hallgerd's Tale", which I read in Oblivion.

http://www.imperial-library.info/content/oblivion-hallgerds-tale

"That was before the First Era," said Garaz. "It's probably mostly myth. But there are all sorts of great warriors of the modern eras. The Camoran Usurper? The unknown hero who brought together the Staff of Chaos and defeated Jagar Tharn?"
"We can't declare an unknown champion as the greatest warrior. What about Nandor Beraid, the Empress Katariah's champion?" suggested Xiomara. "They said he could use any weapon ever invented."

Clearly the First Hero- the Player from the first Elder Scrolls game Arena is mentioned in this book. EDIT: To clarify: The Eternal Champion.

This stands to further prove that what the Player does which is part of the main quest in-game (regardless of wether you do it or not) is canon to the Elder Scrolls lore.

Some have argued that Heroes activities are subjective to each player and thus cannot be recorded as "lore". However, I beg to disagree- The Main Quest is the central story of each game- and is completed no matter what you do- that is not subjective. In that, Past heroes could be seen for their actions in future games, such as Skyrim.

Who knows- we may even encounter the Champion of Cyrodiil (Oblivion's Hero) in his new form- The Madgod of the Shivering Isles.

We already know that champion of cyrodiil and all the other elder scrolls heroes are mentioned in Skyrim. Alduins wall tells about them...

"We"?

EDIT: I never heard about that.

Have you seen the first teaser trailer? That was alduins wall and it had oblivion gate, numidum, red mountain and Staff of Chaos.

I have seen a lot of people post arguments about whether or not the Hero of Cyrodiil will be heard from in Skyrim.

That justifies my post for me at least.

But references to things that happened in past games are not actually references to the Heroes themselves.

what about nerevarine?
Wasnt it a rumor in oblivion that said nerevarine was on a mission and traveled to akavir? o.o i may be wrong

If Sheogorath acknowledges being the hero of Cyrodiil in Skyrim. I will do backflips. Or at least I will try very hard to. I've never successfully done so, so it might end up like Dr. Cox's backflip in Scrubs.

so if you seen this appear across the forums anyway.. why make the thread?

I didn't see anything about this book.

Evidence seems better than just pure arguments.

the OP is talking about the heroes since the oblivion gate would have been heir regardless since the CoC didn't trigger the gates. only closed them.

I thought we'd all pretty much accepted that for fact after what they did to make Daggerfall's multiple endings canon...

Of coarse they'll be mentioned. Key-word mentioned.

People are always hoping however to meet the character in the next game or some how upload their save and meet themselves, etc.

But that's not doable because they were your character. Sure in the next game an absolute ending is established but your characters journey is their journey. Putting them into the game doesn't quite work(Think Vault Dweller easter egg in FO: BoS)

So yes they'll be mentioned just as events from Arena to Oblivion will be mentioned. But don't expect an appearance.

Yes I remember hearing about that now. You hear it being talked about between villagers or something.

I don't know about this Hero of Crocodiles stuff, but I heard a rumor that dragons might be in Skyrim

But now one of them is Sheogorath! That seems a bit special to me.

EDIT: It is possible that since it is Easter-Egged into Oblivion that the Nerevarine went to Akavir that we might see a substantial effect on the Akavir from his presence there- even if he isn't there anymore..

Next thought: Is the Nerevarine immortal?

No, not quite

YOU may have played SI, and YOU may have become Sheogorath

What if I never bought SI? What if I started it and never finished it because I didn't like it? The Hero of Crocodiles never became Sheogorath in that case

True. Very true. Most of my Oblivion characters ignored the island in Niben Bay all together. At most, they swam to it, thought "Hmm...pretty..." and swam back to the mainland to go about their buisness.

By that logic what if I bought Oblivion and never beat it? What if I just went around exploring and let Kvatch burn forever? BAM, Oblivion crisis was never fixed. It's canon. Oblivion crisis ended the world, Cyrodiil no longer exists.

What if you never bought Oblivion? Does the Oblivion crisis then never occur?

SI was a full expansion pack. Not so much a side quest as much as an expansion from the original game.

i think enough evidence is that they've mentioned older heroes in both previous games and the first trailer for this game..

not on topic, but i also felt they give hints as to where the next game will take place during the games.. in morrowind they were tlaking about trouble in cyrodill.. and in oblivion they were talking about trouble in skyrim.. which both time lead me to guess (correctly) where the next games will take place.

It would be pretty cool to have Sheogorath mention being the Champion of Cyrodiil or at least make a hint to it. Having a reference to Morrowind's MQ would be cool too.

No, not by MY logic at least. You are linking OB and SI together as a single entity, making one happen if the other happened

Is it canon that the Champion of Cyrodiil became Sheogorath?

that's my question. The Oblivion crisis is not dependent on what happens in SI

They talked a lot about trouble in the Summerset Isles in both- I kept waiting for a Summerset Isles Expansion or for that to be the next game. ''

sorry it doesn't work that way. well the hero of crocodiles never became sheogorath but the champion of cyrodiil becomes whatever the lore writers wan't it (yes it) to be.