Dialga

Dialga's unique typing and well-distributed stats make it both an excellent offensive and defensive Pokemon. Offensively, Dialga has a stunning base 120 Attack and base 150 Special Attack that's backed by the ever-dominant Dragon-type STAB. Dialga's vast offensive movepool allows it to pick off a variety of Pokemon. Defensively, Dialga's typing offers it a whopping total of nine resistances and an immunity, as well as neutrality to Ice- and Dragon-type attacks, something other Dragon-type Pokemon would kill for. With its stellar base defenses combined with the aforementioned resistances, Dialga is a difficult Pokemon to take down unless you target its weaknesses. Dialga is also revered as an excellent utility Pokemon thanks to its equally-vast support movepool. With its plethora of options, Dialga is, in a word, unpredictable.