Did some research earlier and heres some more info for ya. This information was found on the games website, other message boards, or somewhere else. I dont remember. Oh well, Here you go.




Hero Team: Moe Habana, Kyo Kusanagi, Reiji Oogami
Reiji Oogami shows up with a King of Fighters invitation at the home of Kyo Kusanagi, who is living in America. Reiji, as a representative for Chizuru Shigaku, has come to ask Kyo to join him as his teammate in the championship competition so that they can investigate the waves of mystery that are interfering with the "Orochi" seal. Moe Habana, who herself has been disclosed as a member of the Jyu-Shu Sinpou, has also decided to join Kyo and Reiji in the competition. These Sanshu No Jingi and Jyu-Shu Sinpou alight on the stage of battle so that they can put a stop to the troubles surrounding the "Orochi".


Fatal Fury Team: Terry Bogard, Andy Bogard, Mai Shiranui
Mai Shiranui joins Terry and Andy, the Bogard brothers, to form the Fatal Fury Team. This team is considered to be one of the top contenders to win the upcoming King of Fighters Championship. Victory, however, is not their true goal. Actually, they have been asked by Blue Mary to look into the case of the serial kidnappings that target only children, guided by a dark rumor surrounding the sponsors of the tournament. Will the team be able to win the vicious tournament and learn the true identity of the tournament sponsors?


The Art Of Fighting Team: Ryo Sakazaki, Yuri Sakazaki, Takuma Sakazaki
The upcoming King of the Fighters Tournament is being cosponsored by famous European financiers and major European enterprises. The Garcia Foundation is one of the leading sponsors, so Robert Garcia will be unable to participate in the tournament. Therefore, Takuma Sakazaki, founder of a style of extreme contact karate, has chosen to appear in his place. In order to prove the strength of his extreme contact karate style, Takuma is joined by his son, Ryo, who is known as the "Invincible Dragon", and his powerful daughter, Yuri. The Sakazaki family team is after only one thing -- victory.


Ikari Team: Ralf Leona and Clark
Heidern, who has been following the mysterious case of the serial kidnappings, has discovered some kind of link between an ancient castle in Switzerland, rumored to be the place where the kidnapped children are taken, and the young industrialist who is the main sponsor of the upcoming King of Fighters Tournament. Under orders from Heidern, Ralf, Clark and Leona will appear as a team in the tournament and try to get close to the main sponsor. Leona, however, is sensing something very unsettling about this assignment.


Psycho Soilders Team: Sie Kensou, Athena Asamiya, Bao
A gust of wind carries the crying voice of a child from somewhere in the darkness...
Athena's nightmares began on the day the King of Fighters invitation arrived. Realizing that her dreams are a kind of premonition about the series of kidnappings, Athena clenches her invitation as she makes her decision to participate in the tournament. Can Athena, and her teammates Kensou and Bao, unravel the mystery of the connection between the tournament and the kidnappings in order to save the missing children?


Korean Team: Kim Kaphwan, Choi Bounge, Chang Koehan
For the upcoming King of Fighters Tournament, one team will consist of three members. Hearing that John would be joining their team, Chang and Choi happily thought that one of them would likely be able to sit out the next tournament. Unfortunately however, they have just heard that John was involved in a traffic accident. In order to instill the hospitalized John with the courage to go on, Kim Kaphwan finds new resolve to lead his team to victory. Chan and Choi have a hunch that Kim's special training has made him stronger than ever, and they themselves feel compelled to begin the hardest training of their lives.


The Yagami Team: Jun Kagami, Iori Yagami, Miu Kurosaki
Chizuru Shigaku had sensed there was something wrong with the "Orochi" Seal. Unbeknownst to her, just as she was sending Reiji Oogami, a Jyu-Shu Sinpou, off to fight in the King of Fighters tournament, other Jyu-Shu Sinpou were beginning to take action. Miu Kurosaki and Jun Kagami -- they aren't entering the tournament to win, in fact, they don't even have an invitation. These women, who plan to force their way into the tournament, have managed to get themselves close to Iori Yagami, who has deeper connections to the "Orochi" than anyone else. The three - each with his or her own personal expectations -- form a team to enter the fierce battle!


FEATURES:
---Gain experience with each new match - refine your skills, unlock secrets and master powerful new moves!
---21 deadly characters across 7 tough-as-nails teams, including 3 dynamic characters exclusive to GBA!
---Challenging VS mode (single or team) using the Game Boy® Advance Game Link® Cable.
---6 modes of explosive play - Classic 3v3 Battle mode, 2-player VS mode, and a GBA-specific Story mode.
---Revised and enhanced 'Striker' fighting system brings in outside help for maximum damage!


Extra notes: (i took out alot because of possible spoilers. If you guys dont mind spoilers, just tell me and ill post what i have)
---supposedly takes place between KOF 2000 and 2001
Hero Team: Moe Habana, Kyo Kusanagi, Reiji Oogami
Reiji Oogami shows up with a King of Fighters invitation at the home of Kyo Kusanagi, who is living in America. Reiji, as a representative for Chizuru Shigaku, has come to ask Kyo to join him as his teammate in the championship competition so that they can investigate the waves of mystery that are interfering with the "Orochi" seal. Moe Habana, who herself has been disclosed as a member of the Jyu-Shu Sinpou, has also decided to join Kyo and Reiji in the competition. These Sanshu No Jingi and Jyu-Shu Sinpou alight on the stage of battle so that they can put a stop to the troubles surrounding the "Orochi".


Fatal Fury Team: Terry Bogard, Andy Bogard, Mai Shiranui
Mai Shiranui joins Terry and Andy, the Bogard brothers, to form the Fatal Fury Team. This team is considered to be one of the top contenders to win the upcoming King of Fighters Championship. Victory, however, is not their true goal. Actually, they have been asked by Blue Mary to look into the case of the serial kidnappings that target only children, guided by a dark rumor surrounding the sponsors of the tournament. Will the team be able to win the vicious tournament and learn the true identity of the tournament sponsors?


The Art Of Fighting Team: Ryo Sakazaki, Yuri Sakazaki, Takuma Sakazaki
The upcoming King of the Fighters Tournament is being cosponsored by famous European financiers and major European enterprises. The Garcia Foundation is one of the leading sponsors, so Robert Garcia will be unable to participate in the tournament. Therefore, Takuma Sakazaki, founder of a style of extreme contact karate, has chosen to appear in his place. In order to prove the strength of his extreme contact karate style, Takuma is joined by his son, Ryo, who is known as the "Invincible Dragon", and his powerful daughter, Yuri. The Sakazaki family team is after only one thing -- victory.


Ikari Team: Ralf Leona and Clark
Heidern, who has been following the mysterious case of the serial kidnappings, has discovered some kind of link between an ancient castle in Switzerland, rumored to be the place where the kidnapped children are taken, and the young industrialist who is the main sponsor of the upcoming King of Fighters Tournament. Under orders from Heidern, Ralf, Clark and Leona will appear as a team in the tournament and try to get close to the main sponsor. Leona, however, is sensing something very unsettling about this assignment.


Psycho Soilders Team: Sie Kensou, Athena Asamiya, Bao
A gust of wind carries the crying voice of a child from somewhere in the darkness...
Athena's nightmares began on the day the King of Fighters invitation arrived. Realizing that her dreams are a kind of premonition about the series of kidnappings, Athena clenches her invitation as she makes her decision to participate in the tournament. Can Athena, and her teammates Kensou and Bao, unravel the mystery of the connection between the tournament and the kidnappings in order to save the missing children?


Korean Team: Kim Kaphwan, Choi Bounge, Chang Koehan
For the upcoming King of Fighters Tournament, one team will consist of three members. Hearing that John would be joining their team, Chang and Choi happily thought that one of them would likely be able to sit out the next tournament. Unfortunately however, they have just heard that John was involved in a traffic accident. In order to instill the hospitalized John with the courage to go on, Kim Kaphwan finds new resolve to lead his team to victory. Chan and Choi have a hunch that Kim's special training has made him stronger than ever, and they themselves feel compelled to begin the hardest training of their lives.


The Yagami Team: Jun Kagami, Iori Yagami, Miu Kurosaki
Chizuru Shigaku had sensed there was something wrong with the "Orochi" Seal. Unbeknownst to her, just as she was sending Reiji Oogami, a Jyu-Shu Sinpou, off to fight in the King of Fighters tournament, other Jyu-Shu Sinpou were beginning to take action. Miu Kurosaki and Jun Kagami -- they aren't entering the tournament to win, in fact, they don't even have an invitation. These women, who plan to force their way into the tournament, have managed to get themselves close to Iori Yagami, who has deeper connections to the "Orochi" than anyone else. The three - each with his or her own personal expectations -- form a team to enter the fierce battle!


FEATURES:
---Gain experience with each new match - refine your skills, unlock secrets and master powerful new moves!
---21 deadly characters across 7 tough-as-nails teams, including 3 dynamic characters exclusive to GBA!
---Challenging VS mode (single or team) using the Game Boy® Advance Game Link® Cable.
---6 modes of explosive play - Classic 3v3 Battle mode, 2-player VS mode, and a GBA-specific Story mode.
---Revised and enhanced 'Striker' fighting system brings in outside help for maximum damage!

Your welcome. Ttly. James.
Also, if you dont mind spoilers, take a look at the extra notes.
---supposedly takes place between KOF 2000 and 2001
---Sound Test
---Higher Difficulties

Sorry about the repeat on info. Not sure what happened and the site wont let me correct the mistakes. Sorry!