What are all the Pokémon that have been in OU or higher since their introduction?

Question

For example, Garchomp. To my knowledge, it's never fallen from OU. How many other Pokemon are like this?

Comments

To be honest the way this question is worded contradicts the example you gave. The question is 'what Pokemon have been in OU ever since their introduction'. Garchomp was Uber in gen 4. I understand if you meant it like 'what Pokemon have been in OU or higher ever since their introduction' but that's not how the question was worded. Sorry if this seems harsh for a casual question but maybe it could be worded better next time.

Answer 1

This is every Pokemon I found
Mewtwo
Ho-oh
Lugia
Groudon
Kyogre
Dialga
Palkia
Arceus
Reshiram
Zekrom
Kyurem(white and black)
Xerneas
Yveltal
Zygarde
Solgaleo
Lunala
Pheromosa
Shaymin-sky
Kartana
Garchomp
Tyranitar(Dropped for a very very short amount of time but finished every gen in OU)
Ferrothorn
Excadrill
Aegislash
Genesect
Magearna
Melmetal
Naganadel
Necrozma forms
Tapu fini koko and lele
Toxapex
Greninja
Gliscor(Not in gen 8)
Heatran
Landorus-Therian
Tornadus-Therian

and all Galar OU mons obviously

Comments

Thank you

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No problem

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This is not all correct. Tornadus-Therian is ou in gen 7 and gen 8, as are some others on this list, I think.

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That makes this untrue how?
Also wait a minute, why all gen VIII mons? Surely a lot of them have dropped at some point.

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They said only OU mons. Ho-Oh and others were from Uber

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There are a lot of Gen 8 moms that fell from OU. Therefore, not all of them qualify. :P

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I meant to say all gen 8 OU mons. Sorry I'll fix it.