What Pokemon can not be legitimately caught shiny?

Question

like zekrom reshiram

Answer 1

As of Generation 9, the following Pokemon cannot be shiny under any circumstances:

Any Ash-hat Pikachu (technically can be, but coloration does not change. Credit to Y for that one)
Victini
Keldeo
Meloetta
Ash-Greninja
Vivillon Pokeball pattern
Hoopa
Volcanion
Cosmog
Cosmoem
Magearna and Magearna Original Colour
Marshadow
Kubfu
Urshifu
Zarude
Glastrier
Spectrier
Calyrex
Enamorus
Ting-Lu
Chien-Pao
Wo-Chien
Chi-Yu
Koraidon
Miraidon
Walking Wake
Iron Leaves
Okidogi
Munkidori
Fezandipti
Ogerpon
Gouging Fire
Raging Bolt
Iron Boulder
Iron Crown
Terapagos

The Galar starters are also only obtainable as shinies by breeding -- you cannot sort reset at the start of the game for them.

There are some game-exclusive shiny locks, which can be found in my source.

Comments

Cant Ash Hat Pokemon be shiny, just it doesnt appear shiny?

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Serebii seems to say that Ash Hats can't be shiny at all. What's your source on that?

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https://m.bulbapedia.bulbagarden.net/wiki/Pikachu_in_a_cap

"Due to a bug, this Pikachu can be Shiny. Instead of checking its personality value against the Trainer ID and secret ID number of Pikachu's Original Trainer to prevent its personality value from making it Shiny, the game uses the player's data instead. Shiny Partner Cap Pikachu are identical in appearance to normal ones."

Answer 2

Okay, bulbapedia specifically names Victini, Zekrom, and Reshiram as not being able to be shiny. However, it says that wild Zekrom, Reshiram, and Victini can't be shiny, which means that they might be shiny when obtained through instant gain events.

Comments

The only two event Victini's were never shiny.