it depends what moves they have
that's the end of the game i know i was really sad to but you can go to pal-park or try to catch and lvl up every Pokemon to lvl 100
if your talking about emerald, then this are his pokemon: tentacruel lvl 55, wailord lvl 57, gyarados lvl 56, whiscash lvl 56, ludicolo lvl 56 (becareful of ludicolo! he is tough! even for my band of legendary pokemon!) milotic lvl58.
At the Start he has Rage and Defense CurlAt lvl 4 he learns RolloutAt lvl 7 he learns SpiteAt lvl 10 he learns PursuitAt lvl 13 he learns ScreechAt lvl 16 he learns YawnAt lvl 19 he learns Ancient PowerAt lvl 22 he learns Take DownAt lvl 25 he learns RoostAt lvl 28 he learns GlareAt lvl 31 he learns DigAt lvl 34 he learns Double-EdgeAt lvl 37 he learns CoilAt lvl 40 he learns EndureAt lvl 43 he learns Drill RunAt lvl 46 he learns EndeavorAt lvl 49 he learns Flail
first you have to get a dratini with extremespeed which the dragons den elder will give you if you answer all his questions correctly then it evolves into dragonair at lvl 30 and then it evolves again into dragonite at lvl 55
you got to be lvl 12 or 13 or 14 or 15 i was lvl 15 when i beat him
Train them till lvl 55 -60.I beat them on lvl 62
You Beat Boom Bot LvL 48 By.................Looking on Youtube.com
I beat it with staraptor lvl.58 uxie lvl.53 palkia lvl.57 torterra lvl.48 geodude lvl.8 and quagsire lvl.20 with revives and hyper potions
Good team and you should try to find that out yourself
you have to get all 8 badges beat the elite four and a good team example level 40 and up i beat them the with rampardos lvl 41 infernape lvl 56 ambipom lvl 39 magmortar lvl 49 and a lvl 70 crobat
no i could not beat him with lvl 69s but i beat him with a lvl 81
I beat it with Staraptor lvl.57 uxie lvl.53 and palkia lvl. 56with torterra lvl.47 geodudelvl.8 and another weak pokemon(i forgot which one.
Greenguard Basilisk Lvl. 12 Gell Oh No Lvl. 12 Greenguard Dragon Lvl. 12 Deathgazer Lvl. 12
you dont
i beat it with lvl 37 and 38
Water Gun, no more talk. you can also lvl up torchic to 15 or 16 and he will evolve and learn double kick which is super effective on the first gym