to get Darkrai charge up the styler then spin alot of loops before he atcacks and have
Magneton to heal up. and hope this helps but if you face him first then you can't catch
him until it shows the battle stops then you could catch him

Its really easy, all u have 2 do is get pokemon with the ability of electrify and make
sure u have both the defences for dark attacks, if all else fails, get about three
magneton then it should be easy, and make sure ur styler level is at least 37

its not that hard

I know your supposed to beat the game and all but where is he?

mine was 29 and i beathim first try

At the top of Atru tower.

My styler was lvl 45 XD