You have to obtain the national pokedex. ( If you used cheats like capture trainer's Pokemon you might need to obtain some Pokemon.) If your wondering what to do after that, you need to travel to the other areas. Then go to stark mountain. You need to exit and stay out of stark mountain-for a while if you want to obtain heatran. By the way there are some team galactic guys there so you might want to bring good Pokemon with you.
no you can not get exp in the battle frontier in Pokemon plat
The Choice Band can be bought from a vendor on Pokemon Platinum in the Battle Frontier for 48 BP. To get BP simply take part in the various special battle arenas within the Frontier.
The Game Arcade is in Veilstone City, and the Battle Arcade is in the Battle Frontier.
there are some trainers who have bulbasurs at the battle frontier.
You can buy it at the Battle Frontier for 48 BP.
No, Pokemon Sapphire Version does not have a Battle Frontier. However, Pokemon Emerald and Pokemon Platinum do have the Battle Frontier.
no you can not get exp in the battle frontier in Pokemon plat
No, there is no battle frontier my brother (Pokemon master) says so. their is however one in platinum.
If you see a Pokemon in the battle frontier you have not yet seen, it will not record it. The only way you can add that Pokemon to your pokedex is if you see it outside of battle frontier.
It's in the battle frontier at the battle area
No, you cannot.
beat the frontier brains
No, the Battle Frontier can only be found in Emerald, Platinum and HeartGold/SoulSilver.
Finishing the Battle Frontier in Platinum means obtaining all Silver and Gold prints handed out by defeating the Frontier Brains.
You unlock Silver Prints by beating the Frontier Brains in the Battle Frontier in Platinum.
There is no battle frontier in Pokemon Pearl. Sorry, you'll have to buy platinum for that one bud
As far as I know of - you don't ever battle her.