Blue (game)

"Yo! Finally got here, huh? I wasn't in the mood at Cinnabar, but now I'm ready to battle you. ... You're telling me you conquered all the Gyms in Johto? Heh! Johto's Gyms must be pretty pathetic then. Hey, don't worry about it. I'll know if you are good or not by battling you right now. Ready, Johto Champ?"-Blue, Pokemon Gold, Silver and Crystal.

Blue Oak (オーキド・グリーン Green Ōkido) is the player's rival in the Generation I games and their remakes, and is a Pokémon Champion for a short while. During the Generation II games, Blue serves as the Gym Leader for Viridian City's Gym in the absence of Giovanni.

Blue is unique as a Gym Leader because he has no set type for his Gym, and instead uses a variety of Pokémon. He holds the Earth Badge for the trainers that can defeat him.

In Anime
Blue has never officially been featured in the Pokémon anime series. He is however, the basis for the character Gary Oak. Gary's appearance, attitude, and relationships with other characters has been modeled after and is similar to Blue.

In Game
As previously noted, Blue serves as the player's Rival in the Generation I and Generation III remake games. In Gold, Silver, Crystal, HeartGold and SoulSilver (Generations II and IV), Blue has a less involved role, as the Viridian City Gym Leader.

Red and Blue
In Pokémon Red and Blue, the player first meets Blue in Professor Oak's Lab, where he gives both a starter Pokémon. Despite the player first meeting Blue at the games start, the characters have evidently known each other for a long time, as stated by Professor Oak. As with every game, whichever Pokémon the player chooses, the rival (Blue) will choose the type that is effective against it (e.g. player chooses Bulbasaur (Grass), rival will then choose Charmander (Fire).

Later, after receiving the Pokédex, Blue will set out to find every Pokémon and be one step ahead of the player. As the player progresses through the game, he/she will encounter their rival in several locations and have to battle them every time. However, the player does not fight Blue in Lavender Town when he appears.

Toward the end, after receiving all eight Gym Badges and defeating all of the Elite Four, it is revealed that Blue has already defeated the Elite Four and has become the Pokémon Champion. Challenging him, the player will battle Blue for the title, and when defeated, Professor Oak will come in and induct the player into the Hall of Fame.

Blue's appearance in the original games changes twice from the original appearance, throughout the game. The second appearance is similar to the first, with the addition of a backpack and a Poké Ball. The third (champion appearance), looks almost completely different, with an all new attire, and different hair.

Yellow
Blue's role in Yellow is similar to that of the Red and Blue version. In this game however, his appearance is more similar to Gary's appearance from the anime series. Also, instead of choosing the opposite Pokémon, Blue chooses Eevee as it is the only one, while the player must take Pikachu. The first two battles with Blue are the deciding factor for what his Eevee will evolve into. It is decided on whether the player wins or loses the battles in Professor Oak's lab and on Route 22, or simply skips the latter area.

In these games, Blue's appearance also alters twice after a while, though not as dramatic as the champion appearance in the Red and Blue games. The battle sprite simply are in new poses each time. He is still the Champion until you defeat him.

Gold, Silver and Crystal
Blue's role in the Generation II games is far less involved when compare to the previous. After the disappearance of Giovanni, the former Head of Team Rocket and Viridian Gym Leader, Blue takes over the Gym. Unfortunately for trainers, he is never usually at the Gym, making it hard to battle at the Gym. Unlike any other known Gym Leaders, Blue uses a variety of types in his Pokémon team.

FireRed and LeafGreen
Blue's role in Pokémon FireRed and LeafGreen is the exact same as in Red and Blue. The only slight difference however is that his appearance does not change throughout the game.

HeartGold and SoulSilver
Blue's role in the Generation IV games is far less involved compared to FireRed and LeafGreen. Much similar to its namesakes Gold and Silver, Blue becomes the leader of the Viridian Gym. He still uses a variety of pokemon. On this game, he is the strongest Gym Leader in Kanto but Red surpasses him.

Conspiracy theory (Gen I)

Although most of this is fan speculated, It is believed that the player inadvertantly causes the death of Blue's Raticate on a battle on the S.S Anne ship. Raticate, after the battle is critcally injured, and due to confusion on the boat and crowdedness, Blue is unable to access a pokemon center, which ultimately leaves Blue stuck on the S.S Anne as it departs Vermillion. Later in the game, the player and Blue confront each other in Lavender town, only to engage in a battle where Raticate seems to be taken off Blue's team. However, it is speculated that Blue is in Lavender town for the purpose of laying his deceased Raticate to rest. In the dialogue prior to the battle, Blue states: "Hey (player) why are you here? Hey your pokemon don't look dead! I can at least make them faint!".

All of this is likely false however, since the disapperance of Raticate is probably explained as a case of Blue just taking Raticate off his team.

Pokemon League Championship
If Bulbasaur chosen

HeartGold and SoulSilver
Rematch

Pokemon Stadium 2
Gym Leader Castle

Gym Leader Castle Round 2