Wilson with the Slimer puppet.
Mark Bryan Wilson is a puppeteer and puppet builder, inspired by marionette shows presented at his local grammar school. He performed various background puppets in Muppet*Vision 3D for the musical finale.
For his non-Henson film credits, Wilson puppeteered Slimer from Ghostbusters. On TV, he worked on Greg the Bunny and performed Hammy the Ham Monster on The Mr. Potato Head Show. His other credits include performing a background zombie in Michael Jackson's music video, Thriller.