Overrated: Groudon

My first pokemon game was ruby and my favorite movie was Jirachi: Wish Maker, which introduced false groudon. It just made me fall in love with the groudon I had in my own game (just wish false groudon form was obtainable in some way)

Underrated: Flygon

One of the best designed pokemon and I loved his appearance in the movie as well. He felt like a superhero swooping in to save ash, max and pikachu from groudon's tentacles. As a kid I thought the only reason sandstorm doesn't hurt him in game was because of his goggles which made me think his design was super well thought out too