a force for good or ill?" Actor John Barrowman himself was a key factor in the conception of Captain Jack. Barrowman says that at the time of his initial casting, Davies and co-executive producer, Julie Gardner had explained to him that they "basically wrote the character around [John]". Davies had singled out Barrowman for the part. On meeting him, Barrowman tried out the character using his native Scottish accent, his normal American accent, and an English accent; Davies decided it "made it bigger if it was an American accent". Barrowman recounts Davies as having been searching for an actor with a "matinée idol quality", telling him that "the only one in the whole of Britain who could do it was you". A number of television critics have compared Barrowman's performances as Captain Jack to those of Hollywood actor Tom Cruise. The character's introduction served to posit him as a secondary hero and a rival to the series protagonist, the Doctor, simultaneously paralleling the Doctor's detached alien nature with Jack's humanity and "heart". John Barrowman describes the character in his initial appearance as "an intergalactic conman" and also a "rogue Time Agent" which he defines as "part of a kind of space CIA" and alludes to the moral ambiguity of having "done something in his past" and not knowing "whether it is good or bad because his memory has been erased". Writer Stephen James Walker notes similarities have been found between Jack and Angel (David Boreanaz), the heroic vampire from America's Buffy the Vampire Slayer and Angel; Alan Stanley Blair of SyFy Portal pointed out that "Back alley fights, knowledge of the paranormal and an unwanted task of defending the helpless are only a few of the correlations between the two characters." Jack has also been compared to the title character of America's Xena: Warrior Princess, which featured lesbian subtext between Xena (Lucy Lawless) and her close friend Gabrielle (Renee O'Connor). Polina Skibinskaya, writing for AfterElton.com, an American gay men's website, notes both are "complex characters" haunted by their past misdeeds. Furthermore, like Xena, Jack is "a gay basher’s worst nightmare: a queer weapon-wielding, ass-kicking superhero gleefully chewing his way through awesome fight scenes". One academic article refers to Jack as "an indestructible Captain Scarlet figure". In a comparative contrast, where the Doctor is a pacifist, Jack is more inclined to see violent means to reach similar ends. The BBC News