Chief Chilly Challenge

Chief Chilly Challenge is the last character level in Super Mario 64 DS, unlocking Wario. It is found on the Second Floor in the Mirror Room, and must be accessed by Luigi using the Power Flower to go past the mirror. Luigi then must enter a Wario painting. The level itself is a large icy area, filled with Bullies. At the end of the level is a boss fight with Chief Chilly, who will drop the key to play as Wario when defeated.

Star 1
To collect this star, the player must collect 8 red coins.

Star 2
To collect this star, Wario must use the Power Flower to get the Metal Cap ability. Wario then must walk down a path with wind blowing and break a black block that contains the star.

Small Chill Bully
This level uses regular Bullies. In the original Super Mario 64, there are unused smaller versions of Chill Bullies known as Small Chill Bullies. In some personalized copies of Super Mario 64 DS, the Small Chill Bullies appear instead of the regular Bullies.

Chilly Chungus
Chilly Chungus is a variant of MIPS Chungus that can replace Chief Chilly. They act the same as Chief Chilly.