How do you unlock all characters in Mario power tennis?

Answer 1

To get each character, you either beat them in a singles match or a doubles match in Power Tour mode. However, certain characters will only be unlocked if you beat them in a specific match. For example: Winning a doubles match against Elroy and Tori will only unlock Tori. If you want to unlock Elroy, you have to beat him in Singles. Basically, to get all the characters, you need to beat the game in Singles AND Doubles at least once on any difficulty.

Answer 2

just play the game until reach the level or beat the animals and u willgo to next level