They have quite odd options of attacks, and whilst Cheren is with you, his Pokémon aren't incredibly potent and die simply, so it is primarily a 2 on one struggle. Cheren and Bianca can be fought if you activate the Old Save Bonus by connecting your duplicate of Black or White. Kyurem can be fought (and basically caught this time about) in his chamber at the Giant Chasm right after the Reshiram/Zekrom come upon is accomplished.
Trentgilruth
Trent Gilruth
is a Paving equipment operator
from
Gutersloh Avenwedde