Here is how Princess Yuna defeated Kaos, Bowser and his family in Princess Yuna of Skylands.
Just then, Princess Yuna came out of Nowhere.
Princess Yuna: Looking for me, Bowser!?
Bowser: (use the Kronos Stone to blast Yuna but got it taken by her with her magic) How is this possible?! You have no power over evil!
Princess Yuna: You're wrong, Bowser! We may be young foals, But we are the bravest and the most powerful the you can ever imagine!
Kaos and the Bowser Family were being send to Tartarus.
Mistress 9: CURSES!!!!
Bowser Jr.: DARN IT!!!
Kaos: WE'LL BE BAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACK!!!!!!!!!!!!!!!!
Later, Yuna returned the magic to Golden Apple, Thunder Spectrum, Emerald, Spyro, Chop Chop, Whirlwind, Eruptor, Terrafin, Stealth Elf, Trigger Happy, Blackout and Spotlight.
Princess Yuna: (use her magic) Here you go.
Emerald: Thanks, Yuna!
Golden Apple: What would we do without ya!?
Spyro: Way to go, Yuna!
The foals are reunited with their families.
Prince Isamu: (embraces her big sisters)
Princess Luna: Yuna! Snowdrop!
Hiro: Thank goodness you're safe!
Princess Yuna: Mama! Papa!
Snowdrop: Luna! Hiro!
Stary: Mom! Daddy!
Midnight Sapphire: Mom! Dad!
Night Glider: Stary! Midnight!
Double Diamond: We've missed you!
The foals reunites with their families.