Yup, another one of those threads
There isn´t an alolan Arcanine
Alolan Kingler Steel/Ground
Alolan Dewgong Ice/Psychic
Alolan Arbok Poison/Dark
Guzma use a totem pokémon
(alolan Arbok)
There is a battle between Marshadow and Zygarde, you have to defeat the both of them
Rockruff has 2 evolutions, they are version exclusives, One is rock/fighting (Sun) and the another one is rock/dark (Moon)

Feel free to ask questions