Leonardo Hamato is one of the main characters in the Teenage Mutant Ninja Turtles series. Known for his dedication and leadership, Leonardo is the eldest of the four turtle brothers. He wields a pair of katanas and is recognized by his blue bandana. Trained in ninjutsu by Master Splinter, Leonardo takes his role as leader seriously, often serving as the voice of reason within the group. His character arc frequently explores themes of responsibility, growth, and the challenges of leadership, making him a central figure in their fight against Shredder and other villains.