Candion is a level exclusive to the Holiday Hare 95 expansion of the first Jazz Jackrabbit.
Candion is a simple, linear level with no hazards. The level is populated by the Candyrats which prance about and are found in large numbers, so it's better to advance with caution. At around 3/4 of the second area you can find the secret level in a hidden passage in a wall (you can see the secret sign on the path above, so it's easy to find it). The secret level is one large high-speed section, with quite a few high-speed shoes strewn about.