What are all the non-Generation 7 Pokemon that can have abilities they couldn't have in Generation 6?

Question

The only ones I know are Gengar, Pelipper, and Torkoal.

Answer 1

Gengar: Levitate ---> Cursed Body
Raikou: Volt Absorb ---> Inner Focus
Entei: Flash Fire ---> Inner Focus
Suicune: Water Absorb ---> Inner Focus
Wingull: Adds Hydration
Pelipper: Adds Drizzle
Torkoal: Adds Drought
Roggenrola: Adds Weak Armor
Boldore: Adds Weak Armor
Gigalith: Adds Sand Stream
Vanillite: Adds Snow Cloak
Vanillish: Adds Snow Cloak
Vanilluxe: Adds Snow Warning
Cubchoo: Adds Slush Rush
Beartic: Adds Slush Rush

This list along with the other abilities of Pokemon can be found on Serebii here

Comments

Gen II dogs not yet released with their HA's, and now we'll never know if they were any good... ;(