Ok, I've had this game like forever, and have been like on and off with..

Here's how I beat them all the time do some hard core tranining and us a Pokemon that knows earthquack on the last leader bring Pokemon that know ice moves it's the best at fighting dragon, ghost, and alot of the other types that the leage uses. Bring a lightinig type perfurably a riachu he works real well on the ice lady and your blizken works good on her to for the ice Pokemon she uses. If you havent got kyrogy yet get him and teach him ice moves he helps a lot. I hope iv helped you out!

You should raise all of the Pokemon lower than 50 to lv 50. The 47 might be OK, but the 2 Pokemon in their 30s are definitely Waaaaay too low

You will do good with Blaziken. He is good

Level up kyogre more. 60 maybe or higher

Get magnetric up higher to about 60ish

Swellow should be good at about 50

The other are worthless really.

Get a dragon type Pokemon and a grass type.

Ok you need serious help first you need to even out your pokemons levels have kyogre at level 54 or higher and have all your pokemn well over level 45 it's pretty easy keep kyogres pp up and make sure you bring revives use your blaziken on later people in the leage. Also kyogre must no ice beem and surf ill tell you an easy way throguh drake and steven (champion steven)
Kyogre must no ice beam and sur use ice beam on all drakes pokemon. On stevens Pokemon use surf except for the first fossil Pokemon he uses use ice beam on him ( use surf on armaldo)

danford07

Make Kyorge learn thunder and surf instead of calm mind and body slam then get some max eithers and go fight (with only him)!

Teach Blaziken overheat instead of fire punch. Sky Uppercut and a few Leppa berries should get you through Glacia, Steven, and the first guy (I STILL can't remember his name.) Blaze kick will get you through Phobe (or whatever her name is. You're on your own for Drake, but once again sky uppercut helps. Bring some hyper potions and revives. Using this stratagy I can beat them with my lvl 77 blaziken alone.

Dont bother using dodrio or mightegna.They arent high level enough.you might want to train manetric up about five levels.Blaizken kyogre and swellow are fine but make sure they brilliant moves.You might want to have some ethers and some revievs max potion and what not.You should do the league easily