Fun Fact #6: Black Zetsu solo'd JJ Madara, despite being incapable of defeating Chojuro.Fun Fact #1: Kishimoto once said that Madara Uchiha has no weakness.
Fun Fact #2: Kishimoto once said that he didn't know how to defeat Madara and end the manga.
Fun Fact #3: Kishimoto invented Kaguya because he didn't know how to get rid of Madara.
Fun Fact #4: Kishimoto once said that if Naruto and Dragon Ball were to do a crossover, then Madara would be as strong as God of Destruction Beerus (foreshadowed by the fact that Madara's Perfect Susanoo is Universal Destruction Incarnate).
Fun Fact #5: Chadara oneshots your fave.