4. Farkle, Fergus & Felicia - Shrek The Third
Another popular franchise that went downhill after the protagonists had kids was Shrek. In Shrek The Third, the most famous ogre in film and his wife Fiona had triplets: Farkle, Fergus and Felicia. They are pretty much miniature Shreks that do little more than echo their dad's antics through puerile scatological jokes involving earwax, farts, and the whole lot. In a constant failed attempt to exploit the "aww" factor, the franchise struggled to advance and maintain the original Shrek's quality.