acknowledged to be an imitation of Grant's Mid-Atlantic accent. Matthews wrote that he was hired to voice Captain Scarlet because series co-creator Gerry Anderson "had heard my Cary Grant impression on Pete Murray's [radio show] Open House and simply wanted that sound". Anderson, however, said that the impression was Matthews's own choice, and that while it was not what had been intended for Captain Scarlet, the production was happy for him to use it. Kyle Anderson of the website Nerdist.com writes that Matthews's take on Grant "really makes the titular hero seem like a man out of time, which works really well." In 1995, Matthews expressed surprise at being so well remembered for voicing a puppet character to the exclusion of his other roles, writing: "I think I have spoken many times about how unimportant Captain Scarlet was in my working life 28 years ago, and I can't give the impression that Scarlet has been a big thing in my life since ... [T]o be left with a piece of wood as one's main epitaph is becoming a bit galling!" Writing for TV Zone in 2002, Thomasina Gibson praised the character: "... [H]ere was a hero, far superior to any that came before. Troy Tempest in his Stingray was far too wet! The Tracy troop in their Thunderbirds – mere boys! No! The only colour that shone for me from the rainbow of agents pitched against Captain Black and the meddling Mysterons was the bright and vibrant Scarlet." Discussing the character's depiction, Stephen La Rivière notes that "one element that was never dwelt upon, or indeed even mentioned again after the first episode, is that the protagonist we follow for the entire series is, in fact, nothing more than a duplicate, a doppelganger; the hero initially introduced to us is killed within two minutes of our first encounter with him." Comparisons have been made with the Whoniverse character Captain Jack Harkness, who has a rapid self-healing power that makes him virtually immortal. Nerdist's Anderson describes Scarlet as a "proto-Captain Jack. He dies, but can always rejuvenate." Criticism Jim Sangster and Paul Condon, authors of Collins Telly Guide (2005), argue that the character's "indestructibility" reduces his credibility as a hero: "He'll survive no matter what they throw at him, which should mean that there's zero tension in anything he takes on." Daniel O'Brien offers a similar assessment, identifying this ability as