Help with possible fakes

Hi there, very new here so my apologies if this is thread is in the wrong place. I found a few cards that I bought fairly recently and as I'm very inexperienced with Pokemon trading cards I wondered if any of you could let me know if they're fake or not. I'm trying to clear some space at the minute so I don't need them anymore and would probably end up selling them on Ebay- just don't want to sell people any fakes! Cheers for any help.

All probably legit. That's the legit Japanese card back. And the fronts, without examining in detail, seem to match what they should look like.

Thanks very much :)