(written from a Production point of view)
Rob Steiner is an actor who played one of the Ferengi background performers at Quark's in several episodes of Star Trek: Deep Space Nine. In addition he worked as stand-in for Aron Eisenberg on his appearances in Deep Space Nine as well as on his guest performance in the Star Trek: Voyager episode "Initiations". Steiner also worked as background actor on an episode of Star Trek: Enterprise as identified by the call sheet. He received no credit for his appearances.
A piece of the costume previously worn by Lou Wagner as Krax in the Deep Space Nine episode "The Nagus" also features a nametag with Steiner's name and was sold off on the It's A Wrap! sale and auction on eBay. 
Steiner studied acting under coach Stella Adler and comedy under Greg Dean. He graduated in performing arts from Emerson College in Boston and is also an experienced stand-up comedian, who speaks four languages, with skills in writing and producing. Steiner was the vice president of the internet television station "NetThisTV" and the executive producer at "AcuteTV". He starred in the internet comedy show "Two Peas in Your Pod - A Veggie Telenovela" as Gil and performed in several stage plays and commercials. Steiner is also a skilled musician and has an official fan club. 
Beside his experiences as stand-in in films such as the drama A Civil Action (1998), he appeared on-screen in the Golden Globe winner Man on the Moon (1999, with Vincent Schiavelli, Caroline Gibson, Tracey Walter, and Gene LeBell), the independent film See Jane Run (2001, with Eve Brenner and Stephen Pisani), the comedy Anger Management (2003, with stunts by George Colucci and Jennifer Caputo), Jenny McCarthy's comedy Dirty Love (2005, with Jessica Collins and Brian George), the television movie McBride: It's Murder, Madam (2005, with John Larroquette, Marta Dubois, Joel Polis, John Thaddeus, Marcy Goldman, David Carpenter, and Nicholas Guest), the short comedy The Ghost of Salsbury Inn (2005), the comedy American Fork (2007, with Bruce McGill and Scott Lincoln), the short comedy A Four Cent Carol (2008), on which he also worked as director, writer, editor, and music composer, and the thriller They Came From Outer Space (2008, with Joe Davis).
Steiner made guest appearances in the television series Seven Days, MTV's Trashed, Angel (2004, episode "The Girl in Question" with Carole Davis), and Ned's Declassified School Survival Guide (2007, with Charles Napier).