Bowser

Bowser is Mario's worst enemy and the king of the Koopas.

Friends

 * Goomba
 * Bowser Jr.
 * Creeper
 * Yosemite Sam

Rivals

 * Mario
 * Luigi
 * Peach
 * Koopa Troopa
 * Wario
 * Waluigi
 * DK
 * Daisy
 * Toad
 * Yoshi