To unlock the alternate character colors listed below, fulfill the corresponding requirement listed.
* Green Koopa - In Wario City, free him from the poster.
* Noki - All of Noki’s colors are found in Mario Stadium. Blue and green can be found on the beach, while the red can be found on the giant clam.
* Pianta - All of Pianta’s colors are found in Mario Stadium. The blue one can be found locked in the shop, the pink one is in a palm tree on the beach, and the yellow one is hiding in a barrel.
* Red Paratroopa - In Wario City, pain the giant billboard with a paintbrush found in Yoshi Park.
* Shy Guy - All of the Shy Guys are found in Yoshi Park. Two can be found at the park entrance near the ferris wheel, two are under trees by the stadium, and one is guarding a treasure chest near the back of the park.
* Toad - Toad’s scattered colors can easily be found in Peach’s Garden.
* Yoshi - All of Yoshi’s colors are found in Yoshi Park. Three can be found in trees, one in front of the shop, and one by the switch which operates the rollercoaster.