Blue

Blue as seen in the FireRed and LeafGreen versions.
Blue
Species	Human
Hair color	Red
Relatives	Professor Oak (grandfather), Daisy Oak (older sister)
Debut	Pokémon: Red Version/Pokemon: Green Version

Blue is the Pokémon trainer who originally appeared as Red's rival in the first generation Pokémon games. He later appeared in the second generation games as a gym leader.

Background

Blue was raised in Pallet Town. Ever since his birth, he and Red were rivals. When they grew older, Professor Oak invited them to his laboratory in order to give them their first Pokémon. In Pokémon Red, Green, Blue, FireRed and LeafGreen, there were three starter Pokémon and Red was allowed to choose first, after which Blue picked a Pokémon of a superior type. In Pokémon: Yellow Version the only starter was an Eevee, which Blue received after insisting upon it. Oak gave them each a Pokédex to record data on their Pokémon and achieve Oak's dream. Blue immediately engaged Red in battle with his new Pokémon.

Blue travelled throughout Kanto, collecting various Pokémon and beating all eight gym leaders before Red. Blue also battled Red whenever they crossed paths in their respective adventures. The first battle between them was an optional one at Route 22. Afterwards Blue battled Red by Route 24, aboard the S.S. Anne, in the Pokémon Tower, and in Silph Co. After both Red and Blue had collected eight badges, they battled at Route 22 before heading off to challenge the Pokémon League.

Blue beat Red to the Pokémon League headquarters and became the new champion after defeating the Elite Four. But his reign was short-lived, as Red was able to defeat him. Professor Oak told Blue that though his intentions were good, he had lost to Red because Red treated his Pokémon with love. In FireRed and LeafGreen, Oak then updated the Pokédexes of Red and Blue so they could catch the newly-discovered Pokémon in the Sevii Islands. But Blue eventually grew tired of this task and returned home to catch and train Pokémon at his own rate. Eventually he became Pokémon League champion again, this time with some of the new Pokémon on his team, but he was again defeated by Red.

In the following years, Blue became the Gym Leader of the Viridian City gym (with the disappearance of Giovanni). In Pokémon Gold, Silver and Crystal Versions, Blue was the eighth and final gym leader Gold had to face. Blue first met with Gold at Cinnabar Island, examining the wreckage of the totalled island before returning to his gym. Gold was able to defeat Blue, and Blue awarded Gold with the Earthbadge.

Pokémon Roster

Blue's Pokémon team develops throughout the Red/Blue/Yellow/Firered/LeafGreen versions. In all games focuses on getting a team of diverse types that are hard to defeat, and his exact roster is a variable depending not only on the version of the game, but also on the choices made by Red and how well he fares in his battles with Blue.

Red/Blue

In Red, Green, Blue, FireRed and LeafGreen, Blue will pick whichever starter Pokémon has a type advantage over the Pokémon chosen by Red (such as picking Charmander if Red chooses Bulbasaur). The full list of Pokémon he uses during the original game is as follows:

• Bulbasaur/Ivysaur/Venusaur, Charmander/Charmeleon/Charizard or Squirtle/Wartortle/Blastoise - Blue's starter Pokémon that he uses in every battle. It will evolve into its second form before the Route 24 battle and into its third form by the Silph Co. battle.
• Pidgey/Pidgeotto/Pidgeot - The first Pokémon caught by Blue, and he uses it in every battle starting with the optional Route 22 battle. Evolves into Pidgeotto by the Route 24 battle and evolves into Pidgeot by the Silph Co. battle. Blue no longer uses Pidgeot in the second Indigo Plateau battle of FireRed and LeafGreen.
• Abra/Kadabra/Alakazam - Blue first uses an Abra in the Route 24 battle. It evolves into Kadabra by the S.S. Anne battle and into an Alakazam by the Silph Co. battle. Alakazam is also in Blue's Indigo Plateau line-up for all battles.
• Rattata/Raticate - First used in the Route 24 battle. It evolves into Raticate by the S.S. Anne battle and is not used afterwards.
• Growlithe/Arcanine - First used in the Pokémon Tower battle. It evolves into Arcanine by the Indigo Plateau battle. Arcanine is used in the Indigo Plateau battles, but only if Blue has a Venusaur or Blastoise.
• Exeggcute/Exeggutor - First used in the Pokémon Tower battle. It evolves into Exeggutor by the Indigo Plateau battle. Exeggutor is used in the first Indigo Plateau battle, but only if Blue has a Charizard or Blastoise.
• Rhyhorn/Rhydon - First used in the second Route 22 battle. It evolves into Rhydon by the Indigo Plateau battle. Rhydon is a part of Blue's Indigo Plateau line-up in the first match only.
• Gyarados - Blue uses it in the Indigo Plateau battles, but only if he also has a Venusaur or Charizard.
• Heracross - In FireRed and LeafGreen, he uses a Heracross in the second Indigo Plateau battle, in place of Pidgeot.
• Tyranitar - In FireRed and LeafGreen, he uses a Tyranitar in the second Indigo Plateau battle, in place of Rhydon.

Yellow Version

• 

  Blue with an Eevee, his starter in the Yellow Version
  Eevee/Vaporeon, Jolteon or Flareon - Eevee is Blue's starter Pokémon. He uses it in every battle. It evolves by the Silph Co. battle. Eevee becomes Vaporeon if Red loses his first battle with Blue, Jolteon if Red wins every battle with Blue (including the optional Route 22 battle) or Flareon if Red wins the first battle with Blue but loses the optional Route 22 battle or does not go there at all.
• Spearow/Fearow - Blue's first Pokémon that he uses in the optional Route 22 battle. It evolves into Fearow by the Pokémon Tower battle and is used by Blue in every battle until the Silph Co. battle, after which he no longer uses it.
• Sandshrew/Sandslash - First used in the Route 24 battle. Evolves into Sandslash by the second Route 22 battle. Blue uses it in every battle including the Indigo League battle.
• Rattata - Blue uses a Rattata in the Route 24 and S.S. Anne battles, but does not use it afterwards.
• Shellder/Cloyster - Blue first uses Shellder in the Pokémon Tower battle. It evolves into Cloyster by the Silph Co. battle. Blue uses Cloyster in his Indigo Plateau line-up, but only if Blue has either Jolteon or Flareon.
• Vulpix/Ninetales - First used by Blue in the Pokémon Tower battle. It evolves into Ninetales by the Silph Co. battle. Blue uses it in the Indigo Plateau battle only if he has either Vaporeon or Jolteon.
• Kadabra/Alakazam - Blue first uses Kadabra in the Silph Co. battle. It does not evolve until the Indigo Plateau battle.
• Exeggcute/Exeggutor - First used by Blue in the second Route 22 battle. It evolves into Exeggutor by the Indigo Plateau battle.
• Magneton - Blue uses a Magneton in the Indigo Plateu battle, but only if Blue has either a Vaporeon or Flareon.

Gym Leader Line-up

In Gold, Silver and Crystal he has a stable line-up for a change, taken from his roster in the original Red/Green/Blue versions. Specifically, he uses Pidgeot, Alakazam, Rhydon, Exeggutor, Gyarados and Arcanine.

Other Games

Blue appears as the final boss of the Gym Leader Castle in both modes of Pokémon Stadium. In this game his team is once more a variable, depending on whether or not the player's team is transferred from one of the Gameboy games, and if so which game. If the player uses Rental Pokémon, Blue's team consists of Exeggutor, Slowbro, Ninetales, Clefable, Electabuzz and Pinsir. If Red or Blue versions are used, his team is similar to as seen in the Indigo Plateau battle of those games except he uses Magneton and Dodrio in place of Rhydon and Pidgeot. If Yellow Version is used, his Pokémon are the same as the ones he used in the Indigo Plateau battles of those games.

In Pokémon Stadium 2, Blue was the eighth and last of the Kanto gym leaders battled in the Gym Leader Castle. He had Pidgeot, Arcanine, Alakazam, Exeggutor, Rhydon and Gyarados in the first round. In the second round he instead used Gengar, Scyther, Piloswine, Houndoom, Kingdra and Miltank.

Gary Oak

In the Pokémon anime, the character of Gary was based on Blue (in addition, Blue's portrayal in Pokémon Yellow was loosely based on Gary). Like Blue, Gary was Professor Oak's grandson and Ash's (the anime version of Red) rival. Gary's starter Pokémon was an Eevee, which evolved into an Umbreon during the Johto episodes. Unlike Red and Blue, Ash and Gary rarely battled. Gary was often too busy showing off, and was accompanied by a group of cheerleaders. They had a handful of battles in the Kanto and Johto episodes, which resulted either in a draw or in Gary winning. Eventually Ash defeated Gary in the Silver Conference of the Johto arc. Gary has since committed himself to becoming a Pokémon researcher like his grandfather, specializing in fossils.

Gary made one video game appearance in Pokémon Puzzle League. He appeared as both the first and fifteenth opponent. Gary was the last boss of Hard Mode. In his first battle he used Krabby, Growlithe and Nidoran♀. By the second battle these Pokémon had evolved into Kingler, Arcanine and Nidoqueen.

Trivia

• His official name is confirmed as Blue in Gold, Silver and Crystal, although in the earlier games his name was chosen by the player.
• Named after the Blue Version, which was released alongside Red Version as the first Pokémon games in America.
• In the Japanese version he is instead called Green, due to Red and Green being the first games released there. Green also appears as a default rival name in the American version of FireRed Version.