Kyle Anderson of Nerdist.com considers the Mysterons' schemes "pretty ingenious". Other commentators have criticised their methods. Tom Spilsbury questions the wisdom of making the duplicate of Captain Scarlet indestructible given that his death and resurrection in the first episode cause him to break free of Mysteron control. Jeffery queries why the aliens need to create duplicates at all, given that they are apparently able to manipulate Black through mind control. In addition, both Spilsbury and others consider it tactically unsound for the Mysterons, when broadcasting threats to Earth, to inform Spectrum of their exact targets. Writing for "Starburst", Andrew Pixley and Julie Rogers suggest that the aliens' transmitted threats make them sound "like some evil alien Ted Rogers". Andrew Blair of Den of Geek writes that "there's something both rubbish and endearing about the Mysterons' attempts to harass humanity into submission with their decidedly piecemeal approach."