#50 Diglett (Alolan)

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Its head sports an altered form of whiskers made of metal. When in communication with its comrades, its whiskers wobble to and fro.
– Pokemon Sun Pokédex

#88 Grimer (Alolan)

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It was born from sludge transformed by exposure to X-rays from the moon. When its internal load of germs decreases, it dies.
– Pokemon Moon Pokédex

#103 Exeggutor (Alolan)

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Alola is the best environment for this Pokémon. Local people take pride in its appearance, saying this is how Exeggutor ought to look.
– Pokemon Sun Pokédex

#26 Raichu (Alolan)

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It only evolves to this form in the Alola region. According to researchers, its diet is one of the causes of this change.
– Pokemon Sun Pokédex