>>42030158Many regional variants/forms, especially the ones from Alola, are underrepresented types such as Dark, Fairy, Dragon, Ice, Steel, and Ghost. In Alola, it was a way to assign those rare typings, especially Dark (where there were no actual Dark-types in Gen 1 outside of Mega Gyarados), retroactively to Gen 1 Pokemon.
Only six of the 18 regional variants in Alola were Dark-type, so it wasn't that bad. Dark has a healthy representation in Gen 1 now thanks to the Alolan forms.
For Galar, the only Galarian forms that are Dark-type are Zigzagoon and Linoone, with Obstagoon not even counting as a regional form since it is its own Pokemon. Psychic, Ice, Ghost, and Steel are much more egregious with the regional variants this time.
>>42030165The Alolan Rattata and Galarian Zigzagoon families are Normal-type because they are just "normal" rodents with some secondary evil or nocturnal characteristics.
Galarian Corsola lost both Rock and Water because it is not even coral anymore; it is just a ghost. Corsola and Cursola's branches are not even corporeal.
>>42030259They are among the signature Pokemon of Team Yell, the antagonist team, that strictly used Dark-types and Pokemon that evolved into Dark-types. Obstagoon is Piers' signature Pokemon, and Piers is the defacto leader.
>>42030423Dark-type encompasses sins such as gluttony, wrath, and pride, hence why Alolan Grimer and Alolan Muk have that typing. These Pokemon are so focused on eating garbage that they become spoiled and selfish over it.