Can Mega Pokemon have multiple abilities?

Question

I've noticed that when Pokemon Mega Evolve, the Pokemon gets one ability, regardless of how many abilities it could have normally. Are there any Megas that are an exception?

Answer 1

No, mega evolved Pokémon can't have multiple abilities, just one, even if it have a hidden ability in the normal form.

Comments

Some individuals get a completely different Ability altogether

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wasnt there a mechanic where in gen 6, mega evoing would give you both abilities on the first turn?