I first did a white and Anna route with this team
I do not remeber its sets
On the black Lin route I have used this team
Meowstic
Light Clay, Bold, Prankster
Light Screen, Reflect, Misty Terrain, Toxic
Vaporeon
Leftovers, Bold, Water Absorb
Aqua Ring, Heal Bell, Scald, Baton Pass
Scolipede
Black Sludge, Careful, Speed Boost
Protect, Substitute, Iron Defense, Baton Pass
Sylveon
Leftovers, Modest, Pixilate
Calm Mind, Stored Power, Hyper Voice, Baton Pass
Pyukumuku
Leftovers, Bold, Unaware
Toxic, Recover, Soak, Baton Pass
Incineroar
Leftovers, Careful, Intimidate
Swords Dance, Fake Out, Power Trip, Snarl
Unaware pyukumuku with aqua ring and boosted defenses is nearly unbeatable (except for taunt which nearly no npc uses).
P.S. It was really funny how my aqua ring pyukumuku with boosted defenses defeated Hardy. I let all of my other pokemon faint and then it was 1 v 6 in doubles. After all of his pokemon were poisoned, Hardy just staid for 2 rounds and then switched while he can not do nearly any damage to my pyukumuku.