Here is the sound page the pride of "The Simpsons-O-Rama"! I made all of the sounds of season 12 myself. The others were obtained years ago from the Internet. If you want to save the files on your computer, right click the sound's link and click "Save Target As ". Total sounds: Songs ( sounds). Dr. Nicholas Riviera (usually referred to as simply Dr. Nick) is a recurring fictional character in the American animated sitcom The Simpsons. He is voiced by Hank Azaria and first appeared in the episode "Bart Gets Hit by a Car". Dr. Nick is an inept quack physician, and a Created by: John Swartzwelder (writer), Matt Groening (designer). Feb 07, · Dr. Nick helps Homer gain weight. Thanks for watching!