(written from a Production point of view)
Robert Jodlowski is an actor who portrayed the alien with no neck and heavy folds over eyes in the Star Trek: Deep Space Nine first season episode "Emissary". As an extra, he received no credit for his appearance and was identified by a name tag in the head prosthetic, which was sold off on the It's A Wrap! sale and auction on eBay. 
Jodlowski worked as an additional stand-in on the 1999 video production K-911, which featured Wade Williams and stunts by Jennifer Caputo, Eugene Collier, Al Goto, Cole McKay, Jim Palmer, and Steve Picerni. He has also worked on the CBS television series CSI: NY, as well as films such as The Lost World: Jurassic Park.