Leonardo, aka Leo, is your classic oldest sibling. He’s a little bit bossy, but he firmly believes he has everyone’s best interests at heart! As the oldest, Leo considers himself the leader of the brothers. He loves his family more than anything and is willing to go to great lengths to protect them. Leo is deeply devoted to Splinter’s teachings and encourages his brothers to follow all of Splinter’s rules to a T. Leo can be a bit more serious than the rest of his brothers, which sometimes (believe it or not) annoys Raph, Mikey and Donnie. But, at the end of the day, he loves to joke around with the crew, especially if they don’t break any rules in the process!

When Leo meets April O’Neil, things change in a big way. Before meeting April, Leo was content to live in the shadows and stick to the rules that Splinter laid out for him and his brothers – the most important being to avoid humans at all costs. But after meeting April, Leo is willing to bend those rules, especially if it means spending more time with her.

FAST FACTS ABOUT LEO:

BIRTH ORDER: Leonardo (aka Leo) is the oldest of the Teenage Mutant Ninja Turtles.

VOICED BY: Nicolas Cantu in the Teenage Mutant Ninja Turtles: Mutant Mayhem movie.

BIGGEST CRUSH: Leo has a HUGE crush on April O'Neil, the Turtles' human friend!

NAMESAKE: Leonardo da Vinci! Da Vinci was a true Renaissance man: He was a highly skilled painter, inventor, sculptor and more. He’s best known for painting the world-famous "Mona Lisa."

WEAPON OF CHOICE: Katanas

NINJA TURTLE COLOR: Blue

MOST LIKELY TO: Be the brother with a plan! Leo is great at strategy. He is always thinking 10 steps ahead.

DESCRIBE LEO IN THREE WORDS: Disciplined, hardworking and respectful