While a lot has been said about the alleged feud between Nickelodeon and Disney Channel stars, we know there's no real beef between them. But it's still a little weird when any of them cross over to a different network. You just tend to associate certain celebrities with certain channels!

Well, today is Flashback Friday and also Jack Griffo's birthday, so we're getting nostalgic. Even though you love watching him on The Thundermans, you may not know that the actor actually appeared on the Disney Channel before gracing our television screens as Max Thunderman.

Click through the gallery to see other Nickelodeon stars who got their start on Disney, and let us know if you're surprised by any of these in the comments!

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