[[WMG: Every Challenge is actually a highly advanced VirtualReality program]]
Meaning the Challengers don't actually travel to the 'verses, they just meet {{NPC}}s based on what the real versions look and act like.

[[WMG: The Champions are all [[YuGiOh5Ds Dark Signers]]]]
Why? 1) Most of them are BackFromTheDead and 2) The Nomads (according to Lamdba) have TronLines much like Earthbound Immortals.

[[WMG: The Champions are actually visiting real universes]]
Though they may not know it, their actions may be making a significant impact on the different universes they travel to, for better or worse. This goes for universes the champions are native to. If they are ever able to return home after completing a challenge in a home universe, they may find that its history has been changed.

[[WMG: The Champions' changes splits off into a parallel universe]]
Giving them a false illusion of hope.

[[WMG: The MagicalGirl challenge is taking place in an illusory universe.]]
It consists of what every Challengers "knows" about Japan ,and so is filled to the brink with stereotypes. Once they leave the challenge, it continues to exist, eventually becoming a PromisedLand for weeaboos around the planet.

[[WMG: The world of the MagicalGirl soon becomes the world of Anime/PuellaMagiMadokaMagica]]
* Seemingly Confirmed as Xi points out how they broke a cycle of death.
** Jossed, as the magical girls in it function in a completely different manner and fight completely different enemies.

[[WMG: [[RobotUnicornAttack Robot Unicorns]] are secretly controlling everything]]
The song keeps recurring in various forms... it ''must'' have a more sinister purpose...

[[WMG: The challenges are a series of [[PlotTailoredToTheParty Eigen Plots]] for the Champions]]
There is a very simple solution for each challenge, regarding one or perhaps two of the Champions, and the Nomads are wagering on them coming up with the solution. The challenges will be over whenever the Champions are able to solve one of the challenges in the "correct" manner.

[[WMG: Eddie Riggs is the original Champion.]]
The game BrutalLegend, where he was snatched from his original home and dropped into another, was the very first challenge, which he won.

[[WMG: [[Literature/ChroniclesOfNarnia Aslan is the original Nomad]]]]
He snatched up people from Earth to partake in challenges, be they [[Literature/TheLionTheWitchAndTheWardrobe taking down a witch]] or [[Literature/TheVoyageOfTheDawnTreader an eldritch abomination]]. This makes the Pevensies and those related the original champions.

[[WMG: Susan Pevensie will be chosen as a champion]]
If the above WMG is true, [[spoiler: she will be the only original Champion that's available for picking due to the other proto-champion's statuses.]]

[[WMG: [[Franchise/WinnieThePooh Christopher Robin]] was a Nomad]]
In the infamous Pooh's Adventures genre, most of the time, Christopher Robin put his toys in "plays", which are a fancy term for movies with them inserted into it. Most of the challenges in AGOG and TOTG are events with the Champions inserted into them. Hm...

[[WMG: One of the Champions is a Nomad in disguise.]]
Most likely candidates (though it could be anyone):
* Eddie Riggs, since he has traveled dimensions before and [[ObfuscatingStupidity may know more about how to go about it.]]
* [[VideoGame/HalfLife Gordon Freeman]], since the man ''is'' involved with Black Mesa.
* {{Kirby}}, since no one would suspect the pink puffball of being anything more than being TeamPet.
* Rey Mysterio, since he's the most [[TheTeamNormal ordinary]] Champion, which would be an interesting handicap for a God/Goddess to give themself to play in a game of their own design.
* [[GenkiGirl Blink]], who everyone is still trying to figure out.
** [[spoiler: Confirmed]]
* [[Manga/FairyTail Natsu]], who seems to share a lot of character traits with his Nomad, Eta... including eating powers.
* A future Champion who has yet to appear.

[[WMG: Lambda's champion is Gordon Freeman.]]
Lambda and Black Mesa use the same symbol (λ), and since Gordon Freeman works for Black Mesa...
** Jossed.

[[WMG: The Collector is a daemon of Nurgle]]
Read the description, it fits.

[[WMG: Mr. Tetsukamu will be traveling worlds soon.]]
Phi had possessed his rival, and the creator confirmed that he will stick to Sanichigo. Maybe some DealWithTheDevil will provide him the power to enter challenges as well.
* This looks like it will happen, but not through a DealWithTheDevil. Rather, Dr. Sterling is currently figuring out how the portals work, and has invited Tetsukamu to join her.
** Jossed, they haven't popped up at any point during Season 1.

[[WMG: Vanished champions are a result of their particular Nomads changing their minds about who they want to play with.]]
The Nomads are obviously a fickle bunch. The fact that some champions appear and disappear quickly, or vanish after certain challenges, is because the Nomad who chose that character grows bored with them or is dissatisfied with their performance, and toss them back to wherever they had retrieved them from and select someone else.
* Jossed. [[spoiler: They are used to power Omega's Weapon]].

[[WMG: Mr. Tetsukamu, who is confirmed to be a former Challenger and from a different world, came originally from Warhammer40000.]]
You mean this isn't Canon?
* Indeed not.

[[WMG: The Challenge Chamber is [[VideoGame/ChronoTrigger The End Of Time]].]]
The portals resemble Gates, though they connect to different worlds instead of times. This End Of Time is in fact the end of ALL time, and all worlds.

[[WMG: If a Champion dies in the Common Room, [[DeaderThanDead they will stay dead permanently]].]]
Thus far we have only seen the Champions die during the various Challenges, in which case they are whisked back to the Common Room no worse for the wear. Furthermore, the Nomads have always interceded before any battles the Champions might wage in the Common Room turn lethal. It stands to reason, then, that the Nomads are trying to prevent their Champions from being seriously injured or killed while in the Common Room because they, by nature of how the space operates, cannot be revived should they expire.
* Confirmed!

[[WMG: Lambda will be the FinalBoss / BigBad]]
More of a prediction than a WMG, really, but I didn't know where else to put it.
* Seems to be jossed as [[spoiler: Omega is taking that role]].

[[WMG: Echidna is actually [[spoiler: [[TheWatcher DKN117]]]]]]
Think about it: it's an unknown, mysterious presence that nevertheless influences the plot in small ways without interfering directly.
* Why am I a WMG? I'm a dude, and Echidna is... [[WasOnceAMan was]] not.
* I think it's a jab at your metagaming tendencies.

[[WMG: Rey Mysterio's only purpose in the challenges is to be bait for Echidna]]
Following up on the above WMG, Rey is easily the weakest and least capable Champion in the group, with no natural powers or weapons, only ''just'' capable enough to keep himself alive, certainly not able to play the game very well. At the same time, [[spoiler: [=DKN117=]]] seems to have a soft spot for Rey. The Nomads know this, and have put Rey out there to draw out Echidna, who is actually [[spoiler: [=DKN117=]]], in hopes of recapturing her.
* Hmph: [=DKN117=] here - I'll have you know that Jorge, not Rey, is my favorite Challenger. I just felt Rey was getting kind of a raw deal earlier. Also, I'M A DUDE. [[spoiler:And my personal WMG is that Echidna [[strike:is]] was [[Anime/NeonGenesisEvangelion Asuka]]]].

[[WMG: The Common Room is built on Echidna]]
She's ''in the walls...''

[[WMG: Eddie Riggs is the "Eddie" referred to by Gordon in FreemansMind.]]
In Freeman's Mind, Gordon twice refers to someone named Eddie who can hook him up with things (human skulls and a fake ID, to be exact). Those requests would be rather simple for The World's Greatest Roadie to acquire and provide for him.

[[WMG: Lambda is [[Anime/NeonGenesisEvangelion Shinji Ikari]]]]
Or rather ''was'', long, long ago. Third Impact led to him transcending into godhood, but a combination of his experiences - both as a mortal and as a god - , the passage of time, and the corrupting influence of absolute power turned him into the ruthless, vicious bastard that is Lambda.
* [[spoiler: Slightly Confirmed. He's a variant of Shinji, called Shin Ikari.]]

[[WMG: Echidna is Rei]]
Much like the case with Lambda, she too ascended into godhood. However, she CameBackWrong, and now had become a monster. Lambda notices this and tries to take care of Echidna. This might also explain why Lambda is hinted at loving Echidna.
* [[spoiler: Jossed, she's Asuka, or a variant of her.]]

[[WMG: Echidna is a Timelord]]
Because no WMG is complete without at least ''one'' of these.

[[WMG: We are the Nomads.]]
We're plucking them from their homeworlds, we're throwing them into challenges. It makes sense.

[[WMG: Xi is [[VideoGame/HalfLife2 Alyx]]]]
Reading [[http://tvtropes.org/pmwiki/posts.php?discussion=uob7p22fde8x8xjk3zrwotce&page=662#16533 this post]] I could come to the conclusion that [[color:red:X]][[color:blue:i]] is Alyx. She rigged the challenge to reunite herself with Gordan.
* Jossed. [[spoiler: She's Blink]].

[[WMG: Gordan's initial meeting with Mami will be awkward]]
Given how his first encounter with {{Magical Girl}}s went...
* Jossed; [[RealLifeWritesThePlot Mami's player dropped out shortly after joining, before Gordon & co. returned from their Challenge]]

[[WMG: The Nomads are trying to stave off entropy]]
/人[[color:red:◕]] ‿‿ [[color:red:◕]]人\

[[WMG: The Nomads are writing {{Fix Fic}}s by using Champions/Overlords to do their bidding]]
Most of the challenges are "aim for happy ending" if it's reenacting the plot and we see in the Film/DogSoldiers challenge that failure leads to MindRape.

[[WMG: Dis Baba is still alive]]
Being an insectoid lifeform, he's entered a cocoon and will emerge [[ThatManIsDead bearing no resemblence to his old self]].
* [[spoiler: Confirmed!]]

[[WMG: The statue in the crossover Challenge is Yiaxatar]]

[[WMG: The ending will be AllJustADream.]]
OrWasItADream?

* Specifically, a DyingDream of Shinji Ikari, imagining himself as a supremely powerful entity recruiting powerful people (from across the universes he knows) with a single goal in mind. Lambda's determination to save his wife from imprisonment is Shinji desperately trying to bring Asuka BackFromTheDead. When the Game ends, all the Champions will return, Lambda reunited with his love... and then Shinji wakes up.

[[WMG: The Nomads will either die off or return to their own worlds by the end of Season 1]]

[[WMG: The new BigBad of Season 2 is [[EternalChampions the Eternal Champion]].]]
In the original EternalChampions, people were snatched from time just before their deaths to compete for the right to survive. The Eternal Champion swore the battle would never end...eventually the games will become a free-for-all with the champions having to defeat each other to earn the right to return home.

[[WMG: A Game Of Gods will get [[Series/KamenRiderDenO Cho Den-O]] Syndrome.]]
In which the RPG will be overfilled with the Nomads and that quality will suffer.

[[WMG: After [[HaloReach Jorge]] disappeared, he was sent back to the Challenger-changed Haloverse]]
While the other Champions were off dealing with further Challenges and the Nomads, he was likely helping Carter, Jun, Six, and the Chief fight across Halo and such.
* [[{{@/Psyga315}} This Troper]] supports it. He dissappeared around Reach, so he possibly chose to stay.

[[WMG: Sifuri is the [[WesternAnimation/MyLittlePonyFriendshipIsMagic Elements Of Harmony]] or something the Elements were based on]]
Weapon of Mass Destruction? Check. In pieces? Check. This is just a crack thoery.

[[WMG: A piece of Sifuri is in the Real World]]
And it's in Iraq's hands. Hence why we have the war. It's a WMD after all...

[[WMG: Blink and Neon Tiger are related somehow]]
Both are thieves.
* Jossed by WordOfGod, even though Neon Tiger turned out to be a young girl.

[[WMG: Sifuri is [[Series/DoctorWho The Reality Bomb, ]] which hid it's sentience from the Daleks.]]