Raichu in the Alola region are a dual type of Electric and Psychic, and they use their psychic energy to make their tails float in the air and ride on them. Alolan Raichu have the new ability Surge Surfer, which doubles its speed on Electric terrain.
Your standard everyday Sandshrew is a ground type, but the Alolan Sandshrew takes a completely different type. Two, in fact. It is both Ice and Steel-type, and is much heavier than a normal Sandshrew. This means its speed is lower, but its defense is much greater.
Just like Alolan Sandshrew, its evolved form – Alolan Sandslash – is an Ice and Steel-type Pokemon with the ability Snow Cloak. They’re generally slower than a normal Sandslash, but can swiftly make a path through the ice and snow with their steel claws.
Alolan Vulpix are straight Ice-types, a complete 180 from normal Fire-type Vulpix. They come with the ability Snow Cloak, and can produce ice from their tails to lower the temperature around them in hot places.
Alolan Ninetales are gentle creatures that help people in distress, but shows no mercy for anyone who attempts to damage its territory. As opposed to the standard Fire-type Ninetales, the Alolan fare are Ice/Fairy-types and come with the ability Snow Cloak.
Meowth found in the Alola region are incredibly prideful and selfish, which over time caused them to change in appearance and type. Alolan Meowth are Dark-type Pokemon that can have one of two abilities: Pickup or Technician.
The Alolan Exeggutor is a Grass/Dragon-type that has an extremely long neck thanks to the strong sunlight from the Alola region. This version has a fourth head, on its tail, which can act independently to attack enemies from behind. Alolan Exeggutor has the ability Frisk.
The Alolan Marowak are Fire/Ghost-type Pokemon, a far cry from the standard Ground-type of a basic Marowak. They can have the abilities Cursed Body or Lightning Rod, and are feared as conjurers by the people of the Alola region.
Alolan Rattata have adapted to become Dark/Normal-type in this new region. When Rattata first swarmed Alola, they became so much of a problem that Yungoos were brought into the region to control the population. Alolan Rattata avoided Yungoos by becoming nocturnal, which is how the Dark-type variants came to be.