- Country: USA
- Genres: Animation, Comedy, Family
- Release: 1998-09-19
- Director: N/A
- Writers: N/A
- Language: English
- Stars: William H. Macy , Peri Gilpin , Natasha Slayton , Cameron Finley , Nicolette Little , Carlos Alazraqui , Harve Presnell (1933–2009) , Michael Jackson , Joe Pantoliano , Wallace Shawn
- Runtime: 30 min
- Awards: 3 nominations
- AKA: The Lionhearts , The Lionhearts (United States of America) , Rodzina Lwie Serce (Poland)
- Plot: An animated series about the life of Leo, the MGM studios mascot and his family.
- IMDB:tt0162816
The Lionhearts Cast · · · ALL
William H. Macy
Leo (voice)
Peri Gilpin
Lana (voice)
Natasha Slayton
Kate (voice)
Cameron Finley
Spencer (voice)
Nicolette Little
Judy (voice)