Magic Knight Rayearth (1994)

S1E19 Showdown! The Magic Knights Versus Zagato

As the girls journey toward the floating mountain, they reflect on both the joyful and challenging moments they've shared. Suddenly, they receive a message from Princess Emeraude urging them to fulfill her wish and rescue Cepiro. Upon their arrival, they confront Zagato, who is encased in his machine, blocking their path. A fierce battle ensues, leaving them injured and on the brink of defeat. In a moment of unity, they merge their powers—Red Lightning, Dragon Water, and Green Gale—and unleash a powerful attack that ultimately defeats Zagato. In a haunting final moment, Princess Emeraude cries out in horror at the sight of Zagato's demise.