If you edit the RNG state (or PRNG state in Colo/XD) does this affect Pokemon legality?

[JT_Diamons]

Title. If you edit (via RAM editing/etc.) the current RNG state (or PRNG State for the GC games) to generate a specific Pokemon for you, does this affect legality at all or is in any way identifiable?

[wejhvabewjty]

It is not identifiable if done correctly, but the same applies to something created for scratch.