How are the characters Balrog, Vega and M. Bison connected in Street Fighter II?

Balrog, an American boxer with a similar appearance to Mike Tyson. Called M. Bison in Japan. Once one of the world's greatest heavyweight boxers, he began working for Shadaloo for easy money. Vega, a Spanish bullfighter who wields a claw and uses a unique style of ninjutsu. Called Balrog in Japan. He is vain and wishes to eliminate ugly people from the world. Sagat, a Muay Thai kickboxer from Thailand and former World Warrior champion from the original Street Fighter. He was once known as The King of Street Fighters until he got demoted as The King of Muai Thai in his own tournament due to a narrow defeat at the hands of Ryu's shoryuken (rising dragon punch) which left a deep gash across his chest. Ever since that moment he felt disgrace, and will do anything to have a grudge match with Ryu to get his title back, even if it takes joining forces with Shadaloo. M. Bison, the leader of the criminal organization Shadaloo, who uses a mysterious power known as Psycho Power, and the final opponent of the game. Called Vega in Japan.

Balrog, an American boxer who resembles Mike Tyson, is called M. Bison in Japan. Vega, a Spanish bullfighter with a claw is called Balrog in Japan. M. Bison, the final opponent of the game, is called Vega in Japan.