He is best known for co-developing the kids' cartoon Teen Titans Go! alongside Michael Jelenic for Cartoon Network as well as directing The Super Mario Bros. Movie (2023) along with Jelenic. Horvath made his directorial debut on the feature film Teen Titans Go! To the Movies (2018), which he directed alongside Peter Rida Michail.

Filmography:

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Year	Title	Role	Notes
2010	The Drawn Together Movie: The Movie!	Lead Storyboard Artist
2018	Teen Titans Go! To the Movies	Director Producer Writer	Directorial debut
2019	Teen Titans Go! Vs. Teen Titans	Executive Producer
2023	The Super Mario Bros. Movie	Director