Eric Engelhardt is a puppeteer and puppet builder. He passed away in 2007. The O'Neill Puppetry Conference screened a video tribute to him of some of his best works including a funny story when he would practice karate in the Muppet Workshop late at night when no one was around in front of a big mirror which he broke and hid.
Muppet Credits
Muppets Tonight : Muppet builder/designer, created the original Pepe the King Prawn puppet
The Adventures of Elmo in Grouchland: Muppet builder/designer
Muppets from Space: Muppet builder/designer
Non-Muppet Credits
It's a Big Big World: Puppeteer
Crank Yankers: Puppeteer
The Book of Pooh: Pooh (puppetry only), Shadow character design