Character coin

Character Coins, also called Baby Coins, are coins that the Yoshis can collect in Yoshi's Island DS. The Yoshi can collect a Baby Coin only with the baby on Yoshi's back that is seen on the coin. Collecting all eight Baby Coins in a world (or all seven in the case of world five) unlocks a minigame in the game's Hard Mode. The thirty-nine coins in the game are evenly distributed among Baby Mario, Baby Peach, and Baby DK.

Baby Mario Coins

 * 1-1
 * 1-4
 * 1-6
 * 2-5
 * 2-6
 * 2-8
 * 3-3
 * 3-7
 * 4-4
 * 4-7
 * 4-8
 * 5-1
 * 5-5

Baby Peach Coins

 * 1-2
 * 1-3
 * 1-5
 * 1-8
 * 2-1
 * 2-3
 * 2-7
 * 3-2
 * 3-6
 * 4-1
 * 4-5
 * 5-3
 * 5-4

Baby DK Coins

 * 1-7
 * 2-2
 * 2-4
 * 3-1
 * 3-4
 * 3-5
 * 3-8
 * 4-2
 * 4-3
 * 4-6
 * 5-2
 * 5-6
 * 5-7

Trivia

 * There were two character coins of Baby Wario and Baby Bowser, but they were cut out in the final version of the game. They still remain in the game's coding.