For "United", the entire guest cast returned from the previous episode, as well as Geno Silva who played the Romulan senator Vrax and Scott Rinker as the albino Andorian revealed at the end of the episode. Neither actor had previously appeared in the franchise. The Reman race made their debut in the episode, as they had only previously appeared in the film Star Trek: Nemesis. The prosthetics seen in "United" were reused from that film. Stunt co-ordinator Vince Deadrick Jr. choreographed the Ushaan fight scene between Shran and Archer, with stuntmen Gary Wayton and Kim Koscki doubling for Combs and Bakula in wide shots. The Ushaan-Tor itself was created by Dan Curry, whose previous work had included a variety of Klingon weapons including the bat'leth. The script had simply called for "a dangerous-looking Andorian weapon", with the design fully coming from Curry. To demonstrate the different physiology of the Andorians, the make-up department created a quantity of blue blood for use in that scene. It was also seen in an intravenous therapy prop in sickbay and for an earlier scene where Shran pours a quantity of it onto a Tellarite to issue his challenge. Reception "United" was first broadcast in the United States on February 4, 2005 on UPN. It was watched by 2.81 million viewers, which was more than the 2.53 million who saw the previous episode, but less than the 3.17 million who watched "The Aenar". In 2016, Alasdair Wilkins of The A.V. Club described "United" as containing the most pivotal moment in the series, specifically the moment where the founding races of the Federation worked together to defeat the Romulan plot. He also praised the work of Combs as Shran, adding that the duel between Shran and Archer was "the kind of larger-than-life presence the often staid Enterprise most benefits from". Jamahl Epsicokhan, at his website Jammer's Reviews, gave the episode three out of four stars. He compared the fight scene to the one from the Star Trek: The Original Series episode "Amok Time", and felt that it showed the Andorians as being similar to the Klingons seen elsewhere in the franchise. He felt that the main storyline wrapped up in "United", despite the twist at the end. Michelle Erica Green of TrekNation, also compared "United" to "Amok Time", placing Archer in the same role as Captain James T. Kirk in that episode. She said that this