From r/lostmedia : https://www.reddit.com/r/lostmedia/comments/182ndxp/found_major_news_about_shrek_lost_animation/
IN MAJOR DEVELOPMENT, an animator involved in the creation of the Shrek test animation has generously released the entire test to the public. The newly accessible version spans a duration of 38 seconds, albeit with audio quality on the lower side. An intriguing revelation accompanies this release, as listeners can now discern that Tom Kenny, widely known for voicing characters like SpongeBob, is not the voice behind the mugger in this particular versionof the short.
This disclosure adds extra layer of interest for Shrek enthusiasts and animation aficionados alike. The significance of this test animation in the development of the beloved Shrek franchise amplifies its value. What was once a behind-the-scenes glimpse for industry insiders has now become a treasure trove for fans seeking to explore the early stages of Shrek's creation. The availability of this version in full HD enhances the viewing experience, providing a clearer window into the animation process that eventually gave rise to one of best characters
Original animator (Barry e jackson) https://youtu.be/w5qvMdoxGnc?si=un-IB1EBAVOE9ULv
Noice!