North American DVDs (DVD)

3 Groups, 32 Episodes

Amazon/iTunes Order (Digital)

4 Groups, 59 Episodes

The episode order used by some VOD services, including Amazon Video and the iTunes store, is very similar to the original airing order. However, in this order, the Christmas episode "A Christmas Tori" is the first episode of the third season and "The Blonde Squad" was moved to the fourth season.

Netflix (Digital)

3 Groups, 59 Episodes

The episode order used by Netflix is based on the production order, rather than how the episodes originally aired on Nickelodeon.