You say a Pokémon and I'll guess the region or came from

Hades0918

https://community.pokemon.com/en-us/discussion/comment/148443#Comment_148443

Sinnoh, Hoenn, Hoenn, Kanto, Kanto, Johto, Hoenn, Johto, Sinnoh, Hoenn, Kanto, Celebi was Johto but I believe the first Shiny one was Galar because it was a Mystery Gift for watching the Zarude movie, Sinnoh, Hoenn, Sinnoh

Lonestar85

https://community.pokemon.com/en-us/discussion/comment/148456#Comment_148456

Well done

Try Krabby, Corphish, Mantine, Dhelmise, Corsola, Gorebyss, Elgyem

clasingla

https://community.pokemon.com/en-us/discussion/comment/148461#Comment_148461

most was correct except you could get shiny celebi in gen 2 since it wasn’t shiny locked back then and Chatot is Sinnoh also mystery dungeon eos

Hades0918

https://community.pokemon.com/en-us/discussion/comment/148470#Comment_148470

Kanto, Hoenn, Hmm Johto, Alola, depends (Johto or Galar), Unova, Hoenn

I have three answers I'm unsure of...

Lonestar85

https://community.pokemon.com/en-us/discussion/comment/148474#Comment_148474

Correct,correct, correct, correct, Johto(easy to spot since I didn’t use regional variant, hence correct), incorrect, incorrect

Hades0918

https://community.pokemon.com/en-us/discussion/comment/148471#Comment_148471

Ah

Good ones!

Hades0918

https://community.pokemon.com/en-us/discussion/comment/148475#Comment_148475

I knew the last two were...

Ummm...

Sinnoh and Johto

Lonestar85

https://community.pokemon.com/en-us/discussion/comment/148480#Comment_148480

Both incorrect. Need a hint?

Lonestar85

Btw kind of ashamed you don’t know the last one. Gen 9 Anime utilizes Elgyem’s evolved form quite well, even if it doesn’t reside in Paldea.

Hades0918

https://community.pokemon.com/en-us/discussion/comment/148484#Comment_148484

I'll get it eventually...

I know the Pokémon, just not the region

Hmm...

https://community.pokemon.com/en-us/discussion/comment/148485#Comment_148485

Yeah, it's pretty cool

Last guess

Hoenn and Unova