Skiing the Circuit
In Super Mario Insurance, Dr. Freezegoods appear in the later levels of the Mario Circuit. In the Chilly's Challenge star, several ski around the racetrack. Mario must use a Fire Flower to destroy them all in order to obtain a piece of a Sling Star. Additionally, a single Dr. Freezegood appears in the The Circuit's Red Coins star, skiing around the frozen river. Destroying him releases a Red Coin.