I have always had a shiny dialga, palkia, and giratina.

Palkia, Omniversal Battlefield Wiki

Legendary Pokemon Figure Necrozma Dialga Arceus shiny Rayquaza Reshiram Solgaleo Palkia Zekrom Yveltal Latias

Does This Confirm When Shiny Dialga & Palkia Come to Pokémon GO?

8] Went back to Sword since hearing that Palkia is shiny-locked in PLA. Only 5 runs (and quite a few fails) later, Palkia shines!! : r/ShinyPokemon

Dubryn on X: 100% Shiny Palkia level 51! #PokemonGO #Legendary / X

Pokémon - The Shiny Palkia distribution event begins today! From now through September 29, U.S. Trainers can get the Spatial Pokémon at participating GameStop stores. Are you planning to get a Shiny

Can you catch a shiny Palkia in Pokemon GO?

Shiny Palkia by Scribbasock on Newgrounds

Pixilart - Shiny Palkia by Bonmv317

Pokemon Go: How to Get Shiny Palkia