The Katherine and Doof Tales

The fourth Season 37 DVD release. The DVD features episodes that cover the rivalry of Katherine and Doofenshmirtz. There are four episodes, plus two bonus episodes.

Episodes

 * Katherine v.s. Doofenshmirtz
 * Believe In Myself
 * Amanda's Inside Story
 * The Chronicles of Irving
 * There's a Mouse in the House
 * They Call Him Sonic the Hedgehog

Bonus Features

 * 2 bonus episodes!
 * Sneak peek at the upcoming episode Loudest Day Ever
 * Trial of Sonic Generations (Green Hill Act 1, Chemical Plant Act 2)
 * Free Perry the Platypus toy
 * Coloring pages
 * Hidden features on the menus
 * Previews
 * Behind the Scenes: Storyboard for the episode Amanda's Inside Story