who designed the protagonist?
Mark Henn served as Simba's supervising animator as a cub, Ruben A. Aquino animated the character as he appears as an adult.
Introduction
 Simba was created by screenwriters Irene Mecchi, Jonathan Roberts and Linda Woolverton. While Mark Henn served as Simba's supervising animator as a cub, Ruben A. Aquino animated the character as he appears as an adult.
who did the voice for simba in lion king Matthew Broderick can you name the movie ? The Lion King when was it released? June 1994
Mark Henn was the animation lead for the young Simba and Ruben A. Aquino for the adult Simba. Mark Henn on young Simba, Ruben A. Aquino on adult Simba Ruben A. Aquino
The Lion King The Lion King Simba
Animation Animation Personality and design
 and setting the tone for the film's main characters. The animation leads for the main characters included Mark Henn on young Simba, Ruben A. Aquino on adult Simba,   The animation leads for the main characters included Mark Henn on young Simba, Ruben A. Aquino on adult Simba, Andreas Deja on Scar, Aaron Blaise on young Nala, Anthony DeRosa on adult Nala, and Tony Fucile on Mufasa. Nearly 20 minutes of the film, including the "I Just Can't Wait to Be King" sequence, was animated at the Disney-MGM Studios facility.  The role of animating Simba was divided between Ruben A. Aquino and Mark Henn, the former of whom was the first animator to be assigned to the project. 
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Simba [SEP] Introduction
Simba is a fictional character and the protagonist of Disney's "The Lion King" franchise. Introduced in the 1994 film "The Lion King", Walt Disney Animation's 32nd animated feature, the character subsequently appears in "" (1998) and "The Lion King 1½" (2004) as well as the 2019 remake of the original film. Simba was created by screenwriters Irene Mecchi, Jonathan Roberts and Linda Woolverton. While Mark Henn served as Simba's supervising animator as a cub, Ruben A. Aquino animated the character as he appears as an adult. Simba was inspired by the character Bambi from Disney's "Bambi" (1942), as well as the stories of Moses and Joseph from the Bible.