See, that's one of the new souls I came across when exploring Galar. A Beldum is rare enough, but a shiny one is just icing on the cake. However, that was only part of the appeal. You see, when we came face to face around an alley (what was she doing here in the first place?), she just... stood there. Not really afraid, just curious. And analytic. Actually, being analytic is one of the core aspects of both her personality and battle style. Her immense brain power allows her to accurately calculate the possibilities of a battle at a given time, thus projecting a bit into the future. However, she still has trouble to account for an opponent's odd behavior, leading to miscalculations.
She also doesn't speak that often. Usually, it's only a few words to give her opinion on the situation at hand. It seems like she's actually afraid to open up to people and mingle with the team. Oh, well. Hopefully that'll get better with time!