So is the trainer nature a set thing or randomly determined? for the last 2 or 3 games, its always been Hardy for me. is this determined by anything, and does it influence anything in-game?
By default, it is Hardy, but you can change it.
Just tap on the Nature with your Stylus.
Source: Bulbapedia/ Trainer Card
How to change your username How to add a user avatar Why was my post hidden? Question etiquette Flags vs Downvotes Anime FAQ Official PokemonDb League
Type a Pokemon name, type, move or ability to see instant results.