Yoshi is one of the secondary characters in the "Super Mario Bros. franchise". He is depicted to have a massive hunger and one of Mario & Luigi's closest friends. The .vxp mod has been made 2 times by different 3DMM.com users.
The first version was extracted from Quake II and made for 3DMM by Travis Wells (now known as Foone), which can be downloaded here
Another version was also made years later by 3DMM user: LuNine - This version can be downloaded here.