Ernesto Rumbaut is a Cuban-born voice actor based in Miami, recognized for his work in Spanish and English dubbing for anime and other media. He is also pursuing a doctorate in philosophy, literature, and linguistics of modern Spanish.

Rumbaut is best known for his prominent roles in several anime series. He is the voice of Shota Aizawa in the Latin American Spanish dub of the long-running series My Hero Academia. He took over this role starting from the second season, re-recording lines previously performed by another actor. He has continued voicing the character in subsequent projects, including the OVA Hero League Baseball and the spin-off series My Hero Academia: Vigilantes. His other roles in the My Hero Academia franchise include the characters Yo Shindo and Tensei Iida.

In addition to his work in the My Hero Academia universe, Rumbaut voices Keiichi Maebara in the anime Higurashi: When They Cry – GOU. His other notable anime roles include Shark in Akudama Drive and Xue Mingkai in the donghua film The King's Avatar: For the Glory. His professional profile indicates a recurring collaboration with the My Hero Academia franchise, providing voices for multiple characters across its various series and films.