Antaak, having previously appeared as the Klingon Ambassador in both Star Trek IV: The Voyage Home and Star Trek VI: The Undiscovered Country. Schuck had also appeared in episodes of both Deep Space Nine and Voyager. Eric Pierpoint had previously appeared in several episodes of Star Trek across the various television series, including the TNG episode "Liaisons" as well as episodes of DS9 and Voyager. He had also appeared in the Enterprise episode "Rogue Planet". Brad Greenquist appeared as a Rigelian in this episode in his second appearance on Enterprise, he too had also previously appeared in episodes of DS9 and Voyager. The other Rigelians were played by stuntmen Brian Williams and Tom Dupont, whilst Linda Park was stunt-doubled by Diana Inosanto. It was the second appearance of Seth MacFarlane, the creator of the animated television show Family Guy, in a role in Enterprise. He had previously appeared as an unnamed character in the third-season episode "The Forgotten" but gains the name Ensign Rivers in "Affliction". Reception "Affliction" originally aired on UPN, on February 18, 2005. It received a 1.8/3% share among adults between the ages of 18 and 49. This means that it was seen by 1.8 percent of all 18- to 49-year-olds, and 3 percent of all 18- to 49-year-olds watching television at the time of the broadcast. This equals the ratings received by the previous episode, "The Aenar", which received the highest ratings of the fourth season so far. It finished behind programs on NBC, The WB, ABC, CBS and Fox. IGN gave the episode 3.5 out of 5, and called it "Another strong, solid episode of a series that is only getting better from week to week." Michelle Erica Green reviewed this episode for TrekNation, and described it as a "rollicking good ride". She thought that linking the reason for the Klingons' appearance change to the augmented humans from earlier in the season was a clever idea, but the introduction of Section 31 was suspect as they hadn't been mentioned at all through the season three Xindi arc. She was pleased with the level of detail shown on screen, such as the computer-generated targs and Tucker changing the patch on his uniform when he transfers to the Columbia. Green said that John Billingsley "excels" in this episode, and that the ending was "perfect". Jamahl Epsicokhan on his website Jammer's Reviews, gave the episode a score of