The Circle of Arceus Doesn't Need Modern Legendaries
(Source: Centro Leaks)
That's right, it's time for me to post a theory about this.
A lot of people are pointing out that this diagram is obsolete simply because there's been five more regions of legendaries since it was made and it's been...almost 20 years. I think that's only partly true. It actually holds up surprisingly well in modern Pokemon.
GameFreak definitely tried to get away from the whole "legendaries are gods" thing after Gen IV, mostly because where do you go after Arceus? So you don't get a lot of newer legendaries involved in the creation of the Pokemon world.
Plus, GameFreak used to have these random moments where they worried about continuity. Why do we need incense to evolve the Baby Pokemon from Sinnoh? You think players are going to complain that Munchlax should've hatched in Johto? Well, you might be right...but still.
That might be why a lot of newer legendaries have an alibi that explains why they weren't in the Pokemon World when it was created. Many of them were either in Space, or "Ultra" Space:
The Orignal Dragon of Unova
The Cosmog Line
Necrozma
Eternatus
By the way, some professor really should look into the reason so many incredibly dangerous space dragons are just dropping into the Pokemon world.
Then there's legendaries that are strong in the context of their story, and some are even worshiped, but they're more like regional gods and myths.
The Swords of Justice
The Tapus
The Legendary Heroes
Kubfu Line
Calyrex and His Steeds
The Paradox Duo
The Treasures of Ruin
Ogerpon
Most modern mythicals unfortunately fall hard into this category, to the point that some are literally just a monkey, Zarude. Actually, there's no need to list the others. You get the idea.
But who does fit the circle?
That leaves the Aura Trio, the Forces of Nature, and...Terapagos. In my opinion, these legendaries would be right at home in the circle. The Aura Trio deals in life and death, which is pretty major.
That Yggdrasil inspiration would make the Aura Trio right at home on the tree of life from the beta origin story. You know, that "giant tree of life" that Rayquaza, Groudon, and Kyogre broke apart, that turned into the sky, earth, and ocean?
The three gathered in a circle and prayed, and the seed sprouted. The sprout quickly grew, and became the giant tree of life. However, the tree continued to grow, soon filling the entire world, and no one was able to move.
(...) RAYQUAZA wrapped its body around the tree of life. GROUDON and KYOGRE slammed their bodies into the tree of life. Eventually, the tree fell and broke into three pieces.
REI, AI, and HAI prayed, saddened that the tree would rot away like this. Then, the pieces of the broken tree would transform into the sky, earth, and ocean. RAYQUAZA became the pillar that holds the sky.
(Source: Centro Leaks)
Yeah, now I'm thinking the Aura Trio are more of a second try at this whole tree of life thing at GameFreak. Because the whole "Rayquaza wrapped its body around the tree" gives me major Yggdrasil vibes. Surprise Pokemon theorists, Nidhogg isn't Zygarde...it's Rayquaza!
Rayquaza did Ragnarok!
But some people think the Aura Trio are aliens who came to earth on the meteor that the Anistar City Moondial was made from, so that would explain why the Aura Trio aren't in the circle. After all, the Unovan Original Dragon came from a meteor just one generation earlier.
There's also the alleged "original story" rumor for XY that claimed that XY was originally about aliens. The Teraleak probably has something to say about that. So the jury's out about the Aura Trio - they could belong in the circle, but they might be aliens.
(Wait, the rumor was that the alien plot was cut for time? As in, it would have been included (and maybe made less "weird") if they didn't rush? So is THAT was what in Southern Kalos...)
Or maybe my theory is wrong. Deoxys is on the outer layer of the circle after all. Maybe Arceus doesn't discriminate against aliens, they just have to stay on the outer layer. It's not that much of a difference either way - there's plenty of room on the outer layer with the other mythicals. I'm talking about the head honchos really.
The Forces of Nature probably belong on the circle, if we're being honest. They kind of clash with the Legendary Birds' role in the mythos as "weather" gods, but they should be on there.
Lastly...Terapagos is an enigma when it comes to this whole post. It might be more powerful than Eternatus, since "tera" is more power than "giga", right? It's so much power it can literally warp a Pokemon's type. Like Arceus, or genetic engineering.
And Terapagos isn't an alien like Eternatus, at least there's no evidence of it. It's been stuck underground, but it used to live on land. I would say it's just a really, really powerful Pokemon that isn't technically godly, but it's literally based on the World Turtle, another creation myth.
It's in the same boat as the Aura Trio, only it's not an alien. Except, it is responsible for the "Stellar" type, as in stars. And there is this Pokedex entry:
An old expedition journal describes the sight of this Pokémon buried in the depths of the earth as resembling a planet floating in space.
Who says that planet is Earth? What if that's its homeworld?
Terapagos doesn't just borrow inspiration from the world, but the idea of worlds itself, or the philosophical idea of "turtles all the way down". Not only does it depict a world, but a world on a world. A world on a world on a -
I don't know how to end this. Are all my Teraleak theories going to be this long? I hope not. Happy Teraleak! Enjoy the leak!
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Edit: Changed the name of the title. It used to be called "Newer Legendaries Just Aren't in Arceus' Personal Circle".
All pics other than the Arceus circle are from Bulbapedia. It's easier that way.