Hi what Pokemon should I use to beat the Pokemon leauge Ditto lv30..

You should train some stronger pokemon. You probably don't want to go in until you have a few Pokemon that are at least at level 60.

Charizard,Venasaur,wartorlte(Evolve to blastoise),Hypno,Machamp(lv47),Pidgeot.

First of all, raise there levels to about 60. Then use Machamp, Charizard, Blastoise (when Wartortle evolves) Pidgeot, Venasaur and Lapras. That's my opinion.

You need to train them,I think you should pick:
Lapras
Charizard
Venusaur
Machamp
Pidgeot
Hypno

Depends on the moves they know but I'll try my best.
Venusaur
Chaizard
Machamp47
Pidgout
Hypno

Bah, Ditto and Diglett won't serve much use the the Elite Four trainers. If you havn't already you should go back and capture Zapdos and Articuno the Legendary Pokemon Titans. They will prove most helpful in your case. Zapdos can be found by Route 10 near the Rock Tunnel with that Pokemon Center near the tunnel in the Power Plant. I am guessing since you have gotten up to the Elite Four you have HM 3 (Surf) >_>. Surf a long the stream and you will come across the abandoned Power Plant, save before attemping to fight the Pokemon, you only have one shoot; be sure to have many Ultra Ball(s) and recovery items. Articuno which is found in the Sea Foam Islands is inbetween Cinnabar Island and Fuchsia City, you will need HM 4 (Strength) on one of your Pokemon to move some bulders in order to reach Articuno. Likewise with Zapdos be sure to have plenty of Ultra or Great Ball(s). You could have gotten Motres as well, but I think you're past that part. Both of the Legendary Bird Pokemon will be at level 50 so work hard if you didn't get them or knock them out already. Your Pokemon should be at least level 45 or higher to stand a chance against the Elite Four, but for total insurence level 55 or higher (some of your Pokes) should be at. This is a good simple of what you could use:

- Machamp
- Venusaur
- Zapdos (if can be obtained)
- Articuno (if can be obtained) or Rhydon/Golem
- Lapras
- Alakazam

If you can't get Moltres that's fine, Charizard could still make a good substitute for him. Zapdos would make a great edition to your team, and a even better one if you still have TM 24 (Thunderbolt) to teach him. Machamp holds some smack down here with the right level and moves. Lapras is a lot better then Blastoise, both movepool and state wise. He has much more varity of choices then Blastoise does, he needs proper training though. Alakazam is much better then Hypno, if you can get his moveset he will help you out a lot in the Elite Four. Calm Mind/Psychic/Recover/Reflect. Yes Zam is a powerhouse in the RPG. Reflect and Recover will more then enough make up for his poor defenses. Calm Mind will turn his already rocket boosting special attack even HIGHER! Also tune up his mediocre special defense. Articuno's Ice Beam attacks will fend off Lance's Dragon Pokemon and some of Gary's Pokemon as well; you could also use Lapras for that job as well if it has Ice attacks. I don't know your movesets so I can't really help you anymore then now.

Raise your Pokemon to better and higher levels first. Charizard, Venusaur, Wartortle, Machamp, Hypno, Lapras. Again raise their levels higher or you wont get very far.

They all need training up, when you have, use Venusaur, Charizard, Lapras, Blastoise(when your Wartotle evolves), Pidgeot and Machamp.

Sorry, Not great...!

Your Venusaur is reallly good and just train your Charizard more, and lapras and machamp well you get the picture. JUST TRAIN ALL THEM!!!

P.S. Sorry for being so mean.....

Hope I helped and Good luck on beating the Elite Four!!!

Your Pidgeot (for Bruno's fighters), Venusaur (or get Zapdos!!!) for loreli's water freaks, Hypno for Agatha's ghosts and blastoise(train up wartortle) for brunos rock Pokemon (have it with ice beam and it will take care of lances dragons too) should do, but have them all level 60s first

For the first time against Elite Four right?
The use
1.Machamp
2.Venusaur
3.Charizard ( train him some more )
4.Wartortle ( Evolve him and then train him until level 50 or above )
5.Pidgeot ( train him some more )
6. Hypno ( but you should train him )

6/10, lot of room for improvement. Teach Lapras Ice beam, Evolve wartortle, venusaur's ok but train a bit, and get an electric Pokemon pls.

Or you will never beat Lorelei unless you have a lv100 team. Hypno is ok but post a moveset, if it has hypnosis or confusion DELETE IT and replace with psychic or psycho boost with white herb (psycho boost s the psychic equivalent of overheat).

Hope I helped.