Michael Tremain Sinterniklaas is a French-born voice actor and ADR director based in the United States. He has provided voices for a number of English-language versions of Japanese anime films and television series, as well as cartoons and video games. He is the founder and owner of NYAV Post, a Bi-coastal studio located in New York City and Los Angeles, which dubbed many different anime titles and recorded several original prelay works.

Leonardo, commonly nicknamed Leo, is a superhero appearing in Teenage Mutant Ninja Turtles comics and related media, and created by American comic book artists Kevin Eastman and Peter Laird. He is one of the four central characters of the franchise, along with his brothers, Raphael, Donatello, and Michelangelo. Leonardo is the oldest turtle and the fearless leader of the group.