Mine were probably Florinia/Serra. Aside from haxing a powerful staraptor lvl 24? Cradily into her team, Florinia was pretty easy. That thing was a total nightmare x.x I haven't tried her in E09 though, is she much easier?
Serra just spammed Blizzards in my face all day and only my Magnezone could resist it, even then it was usually 2hkos after hail. I ended up keeping Abomasnow alive as he would occassionally do grass hammers on my Mag while my Char/Scraft proceeded to roll everything down slowly as almost everything outsped them. xD