Mario Cuitláhuac Castañeda Partida (born on 29th June 1962 in Irapuato, Guanajuato) is a Mexican voice director and voice actor who provides voices for the Mexican narration of Thomas & Friends.
He is best known for voicing Mr. Raymond (Don Ramon) and Junior (Ñoño) from "El Chavo", the title character Wishbone, Cosmo Kramer from "Seinfeld", Ross Geller from "Friends" and Goku from "Dragon Ball". He is also the official dub-over for Bruce Willis, Billy Ray Cyrus, Jim Carrey and Jackie Chan in Mexico.
He is also the father to voice actors Arturo and Carla Castañeda.
- Eduardo Garza stated that he was originally going to retire from voice acting in 2012.