I snuck Latios and Manphy in but dont know how
Some legendary Pokemon can't enter.
no, there is no way to make legendarys shiny or any Pokemon shiny but there is a way to clone them in battle tower.
Palkia is not qualified to enter the battle tower tournament, this rule remains unchanged to all legendary Pokemon except pseudo-legendary Pokemon such as Articuno, Zapdos, Moltres, Entei, Raikou, Suicune, Regirock, Registeel, Regice, Latios, Latias, Mesprit, Uxie, Azelf, and Cresselia. All others are not permitted to enter.
the legendary Pokemon are different levels when you catch them. also in crystal there is a battle tower where when you beat it you can catch suicune without a masterball because you can battle him without him running away.
The non cool thing about the battle frontier is you can't enter legendary Pokemon however you can go around that rule by having the following Pokemon: Regice, Registeel, Regirock, Articuno, Zapdos, Moltres, Raikou, Suicune, Entei, Latios, Latias. For some reason those are the only exceptions to the rule of legendary Pokemon maybe because the rest of the legendaries are overly powerful.
No its not, legendary Pokemon like that are not allowed in.
All legendary
Some legendary Pokemon can't enter.
Those are legendary or "exotic" pokemon, so they're kind of "too strong" for the battle tower.
no, there is no way to make legendarys shiny or any Pokemon shiny but there is a way to clone them in battle tower.
You can go to battle tower, vs you rival, catch legendary pokemon you can catch garratina in dimond look on youtube.
Im pretty sure it is because they are legendary, and because they are legendary, they appearantly have an unfair advantage. I know, it sucks.
no
Burnt tower, Tin tower and whirl islands.
Mo battle tower
Yes, Battle Tower in Ruby version. To get there you must defeat the Elite Four and get a ticket for the ferry. Go to Slateport or Lilycove cities to board the ferry and head to the Battle Tower. After you have been there, you will be able to fly back any time you like. Fighting through the battle tower will not earn you any XP but if you get through it, you will be rewarded an item (usually a rare one) depending on your time. You have to compete with three Pokemon and they are not allowed to be Legendary. There are two categories, Lv50 and Lv100. In Lv50 only Pokemon lv 50 or under can enter and all of the Pokemon you compete against will be Lv50. In Lv100 all Pokemon you battle will be Lv100. You will be healed between battles at the battle tower. In Pokemon Emerald version there is a Pokemon duplicate glitch, Google it if you want to learn more. Hope I helped!
at N's castle or dragonspiral tower