I loved the Narns: they were tough cookies.
The Narn makeup was particularly ground-breaking proving it was possible to put leading characters in neck-up prosthetics within the time and budget constraints of a TV series: although there were problems in finding actresses prepared to wear it. Mary Woronov was intended to be a series regular as G’Kar’s assistant but the actress left the show after one episode because of problems with the prosthetics and contact lenses (which she never wore on screen); Susan Kellerman, the first actress to be cast as Na’Toth, quit during her first morning’s filming; her relacement Julie Caitlin Brown turned down the offer to continue in the role for the second season (though she did return later for one episode).
The makeups were originally designed by John Vulich and Optic Nerve Studios who explicitly set out to lift the bar for Sci-Fi TV shows: ‘not just a forehead’. They largely succeeded – setting a standard which only Farscape has beaten.