The Battle Frontier has 7 Leaders, like Gym Leaders called the Frontier Brains Trust. And Like Gym Leaders they have Seperate Sprites and Seperate Teams. Here is a List of them and their 2 sets of teams. You can only battle them in the 1 VS 1 modes

At the end of your 5 Consecutive Wins in Tournements (A Total of 19 Battles) (1 on 1 Only) you get challenged by the Dome Leader. Beat her and you shall get the Silver Battle Dome Badge:

Dome Superstar Tucker	Swampert	Salamence	Charizard

At the end of your 10 Consecutive Wins in Tournements (A Total of 39 Battles) (1 on 1 Only) you get challenged by the Dome Leader. Beat her and you shall get the Gold Battle Dome Badge:

Dome Superstar Tucker	Swampert	Latias	Metagross

At the end of your 28 Consecutive Wins or Room Completions, you got notified by the owner about the trainer, go to the far right room and you'll be challenged by the Pike Champ. Beat her for the Silver Battle Pike Badge:

Tube Queen Lucy	Seviper	Milotic	Shuckle

At the end of your 140 Room Completions, you got notified by the owner about the trainer, go to the far right room and you'll be challenged by the Pike Champ. Beat her for the Gold Battle Pike Badge:

Tube Queen Lucy	Seviper	Gyarados	Steelix

After 27 Straight Battles & Wins (1 on 1 Only) , the Arena Captain appears and challenges you. Beat her and you get the Silver Battle Arena Badge

Arena Captain Greta	Heracross	Umbreon	Shedinja

After 56 Straight Battles & Wins (1 on 1 Only) , the Arena Captain appears and challenges you. Beat her and you get the Gold Battle Arena Badge

Arena Captain Greta	Umbreon	Gengar	Breloom

After 21 Battles in the Battle Factory (1 on 1 Only), you will get challenged by the Battle Factory champion, beat him and you'll get the Silver Battle Factory Badge:

Factory Head Noland	Grovyle	Octillery	Omastar
	Note; Above is the team we battled. Chances are like everyone else in the Battle Factory, Noland's team is completely random

After 42 Battles in the Battle Factory (1 on 1 Only), you will get challenged by the Battle Factory champion, beat him and you'll get the Gold Battle Factory Badge:

Factory Head Noland	Espeon	Venusaur	Nidoking
	Note; Above is the team we battled. Chances are like everyone else in the Battle Factory, Noland's team is completely random

After 21 Consecutive Wins (1 on 1 Only) you get challenged by the Palace Leader. Beat him and you shall get the Silver Battle Palace Badge:

Palace Maven Spenser	Crobat	Slaking	Lapras

After 42 Consecutive Wins (1 on 1 Only) you get challenged by the Palace Leader. Beat him and you shall get the Gold Battle Palace Badge:

Palace Maven Spenser	Arcanine	Slaking	Suicune

At the end of your 21st Floor you get challenged by the Pyramid Leader. Beat him and you shall get the Silver Battle Pyramid Badge:

Pyramid King Brandon	Regirock	Regice	Registeel

At the end of your 70th Floor (Through it 10 times) you get challenged by the Pyramid Leader. Beat him and you shall get the Gold Battle Pyramid Badge:

Pyramid King Brandon	Articuno	Zapdos	Moltres

After 35 Consecutive Wins (1 on 1 Only) you get challenged by the Tower Leader. Beat him and you shall get the Silver Battle Tower Badge:

Salan Maiden Anabel	Alakazam	Entei	Snorlax

After 70 Consecutive Wins (1 on 1 Only) you get challenged by the Tower Leader. Beat him and you shall get the Gold Battle Tower Badge:

Salan Maiden Anabel	Raikou	Snorlax	Latios