Finally got caught up to the end of Episode 8. Here's my team and backups:
*UPDATE*
Here's what I have up to level 50 (since the current cap is 55):
Ninetails drought- flamethrower, confuse ray, will-o-wisp, extrasensory
Magnezone magnet pull- spark, flash cannon, metal sound, charge beam
Camerupt solid rock- lava plume, earth power, yawn, rock slide
Banette insomnia- sucker punch, will-o-wisp, hex, shadow ball
Gyarados intimidate- bite, aqua tail, ice fang, dragon dance
Arbok intimidate- crunch, acid spray, mud bomb, glare
Swoobat klutz- air slash, psychic, future sight, calm mind
Aggron rock head- iron head, take down, mud slap, iron defense
Venomoth tinted lens- poison fang, psybeam, sleep powder, signal beam
Honchkrow super luck- wing attack, foul play, haze, shadow ball
Drifblim unburden- gust, focus energy, charge beam, shadow ball
Emolga motor drive- spark, discharge, double team, acrobatics
Sceptile unburden- leaf blade, x-scissor, screech, night slash
My main team is:
Camerupt, Honchkrow, Aggron, Banette, Magnezone, and Arbok
currently training:
Sandile
Blitzle
Houndour
Trapinch
Unfezant
Raltz
Whirlipede
and some others