Here's my White 2 team (Which is heavily influenced by my Nuzlocke Run, by the way) I'm currently at Nacrene City, as I've beaten the Elite Four.

Malcolm the Bisharp Lv. 68
Naughty Nature
Swords Dance / Night Slash / Iron Head / Shadow Claw
I might consider replacing Swords Dance, as Defiant does a similar job anyway. His job is pretty much to destroy anything Psychic or anything with squishy Defense.
Looks good to me. If you replace SD, get Brick break.

Marco the Chandelure Lv. 68
Adamant Nature (D'oh!)
Will-O-Wisp / Flame Burst / Energy Ball / Shadow Ball
Got really unlucky with his nature, but anyway; Will-O-Wisp is there for those with murderous Attack, otherwise he's a decent Sp.Attacker despite his nature.
Teach it Flamethrower over Flame Burst.

Diana the Sandslash Lv. 68
Mild Nature
Swords Dance / X-Scissor / Earthquake / Strength
She's here to take hits, and she's also great at dealing damage as well. One thing though. Mild Nature... WHY??
Looks good, but when you push all the boulders down the holes, replace Str with Shadow Claw.

Sidney the Mienshao Lv. 70
Calm Nature
Drain Punch / Force Palm / U-Turn / Acrobatics
Here to easily take down Fighters, Volcarona, etc. Acrobatics without items is op in single-player, just sayin.
Hi Jump Kick over Force Palm. IMO, it is too frail for Drain Punch. Fake Out > Drain Punch.

Fafnir II the Serperior Lv. 69
Hardy Nature
Return / Coil / Leech Seed / Leaf Blade
One of the members who originally died in my Nuzlocke, against the E4. Might want to revise his moveset, and give him more of an annoying set, with Toxic / Leech Seed / Protect / Coil or something like that.
Good.

Amanda the Lapras Lv. 76
Rash Nature
Rain Dance / Surf / Ice Beam / Thunderbolt
My other member who also died against the Champion.
Another Sp.Attacker. Might want to replace Thunderbolt with Thunder (if it's possible, I don't know) for more power. (As I have the rain to cover the accuracy issue.) I hoped for her to be a decent wall as well, but well... not really. (0 IVs at Sp.Def, yaaay)
Psychic over Rain Dance as you have a Fire type and a Ground type on the team.
Also, she's overlevelled because of the Join Avenue.
If you want to give feedback, then do as you wish
