Saddest Death: Mufasa
How could I not choose this death? It is sad, a bit scary when you're younger, and little Simba watches it happen! Also his brother Scar is the one that kills him. I know this story is basically that of Hamlet, but it is so disturbing in cartoon form. I remember crying during this part many times, and I probably still would now if I was watching it. I think what makes it the most sad is when Simba says, "Dad, get up! We've got to go home!" because he doesn't understand that his father has passed away.
