Mario Superstar Baseball

To get a profile for a character just play a single player exhibition game and win.
The M.V.P will have his profile unlocked in exhibition records.

In order to unlock the mini-game, "Coin Derby", perform the following task:

To unlock the sectet map, beat every minigame once. The sectet map lets you go through a warp pipe and go to an island which you can play toy field on. You can play it 3 times and it is 10 turns.

You will complete challenge mode quickly if you use Peach's or Yoshi's team. You will then unlock Baby Luigi or Toadette.

Go to exhibition mode and play with two players. Have player two as the pitching team, and player one on the batting team. Press A to pitch the ball. As soon as you press A, when player 2 is preparing to pitch, quickly go to player one and charge up for a charge swing. Then, hit the ball when your character is fully charged. Most of the time you will get a home run. Note: Using characters such as Wario, Donkey Kong, Bowser, and other power type characters are recommended.

Go to challenge mode and choose Yoshi as your captain. Go to Bob-omb Derby (by the Pinita) on easy mode and win. Then, go to the shop. Buy a Power Bat. Then play Peach's team first (the white and pink castle). You should hit continuous homeruns with the Shy Guys. You will later unlock Baby Luigi.
Waluigi.

Bowser must hit a homerun and Baby Bowser must to hit a homerun immediately afterwards. To do this you must not have bought either of their specials (the bullets). Start a game (Yoshi recommended) and use a star with Bowser. If it does not foul you should automatically get a homerun. Repeat this with Baby Bowser. As long as you do not have the specials it result in a homerun almost every time.

With Mario pitching, press A to make him start his wind-up. When he reaches the top of his jump, press A again to make him pitch a "Nice". Note: This may require a few attempts.

Hold A to pitch. Count to four and release A. You will throw a "Nice" pitch.
Andrew Finelli.

To get a "Nice" pitch every time, look for a flashing light under the character when charging. When releasing at this point, he or she should always throw nice pitch, though may require some practice. Note: Waluigi is the best pitcher.
Tallandnerdy.

When batting, hold R to do a Star Swing. Hit the ball in the sweet spot to achieve a "super homerun". This super homerun cannot be blocked or caught, and will always go out of the park. When executed in an Exhibition game, it will use all five of your Team Stars. Use "Free Batting" under the "Practice" menu to try it, or for a demonstration.

Play through all the mini games in a random order in the Grand Prix.

Successfully complete challenge mode as Yoshi.