i'm in your conscience
I can do the puzzles by heart yes yes. The Regi trio is my favorite because they actually made you search for them instead of putting them right in front of your face. It was fun, unique, and it really made you feel like you were facing a true legendary. Their backstory is great too.
Regice is my favorite of the Regi trio, and one of my favorite legendaries. Even though it's weak to the other two, I just like its design better. And its cry is...interesting. lol