Are all shiny Pokémon from generation 7 and under square sparkles?

[yoshivsjoshi]

Curious to know if all the Pokémon that are shiny that you transfer into gen 8 from older games will they 100% be a square shiny? or is there a small chance you get normally shiny? thank you!

[Poke J]

12 minutes ago, yoshivsjoshi said:

Curious to know if all the Pokémon that are shiny that you transfer into gen 8 from older games will they 100% be a square shiny? or is there a small chance you get normally shiny? thank you!

No, since gens 3-7 can produce shiny Pokémon that don't have an XOR that 0 and square shiny Pokémon need the XOR to equal 0. Gens 3-5 can have a XOR of 0-8 and Gens 6-8 can have a XOR of 0-16 for a shiny Pokémon to be produced. The exception to this is virtual console Pokémon, Fateful Encounter Pokémon, and Pokémon from GO will always be square shiny. Another exception are Max Adventure Pokémon will have a XOR of 1 so they can never be square shiny.