Location: Indigo Plateau

Unlike both Blue & Green, Red is not found multiple times. Instead, Red will only appear when you have reached certain conditions. To get to Red, you need to beat at least 6 Master Trainers. This shows that you have a team of 6 worthy Pokémon as Red will only battle you if you have 6 Pokémon on your team. When that is done, he will appear outside the Pokémon League in the Indigo Plateau.

Pokémon Trainer Red	Pikachu	Machamp	Arcanine	Lapras	Snorlax	Venusaur
Battle Type Items	Level 85	Level 85	Level 85	Level 85	Level 85	Level 85
	Attacks: Thunderbolt Brick Break Iron Tail Reflect	Attacks: Superpower Fire Blast Earthquake Hyper Beam	Attacks: Heat Wave Crunch Will-O-Wisp Roar	Attacks: Ice Shard Waterfall Body Slam Megahorn	Attacks: Toxic Protect Rest Body Slam	Attacks: Sludge Bomb Mega Drain Leech Seed Amnesia

Defeat him and you'll earn the special title of Battle Master and will then leave. He re-appears when you defeat the Elite Four once again