Hey, Natural-sama here, showing you THREE legendary Pokemon you can get on Pokemon X or Y WITHOUT hacking!

1) Yveltal/Xerneas - The main legendary in the storyline, you get them through the campaign...

2) Mewtwo - He's in a cave in the Pokemon village after you beat the game

3) Zygarde - in a side cave in Terminus cave, also after you beat the game

That's right! All three of them!

Try them out, see for yourself!