Mysterons condemn humanity's unwarranted aggression and declare a retributive "war of nerves" against Earth – the first act of which will be the assassination of the World President. As the aliens go on to state that "one of you will be under our control", Black undergoes a dramatic change of appearance as he sits in the cockpit of the MEV, his expression hardening and his face becoming pale – thus, he is transformed into the primary instrument of the Mysterons' campaign of vengeance. After Zero-X returns to Earth, Black disappears. The exact nature of Black compared to other Mysteron agents is never explicitly stated in the series. Interpretations differ: Chris Bentley states that Black is killed on Mars and replaced with an indestructible Mysteron doppelganger, while according to Chris Drake and Graeme Bassett, the unique manner of his corruption suggests that unlike the Mysterons' other victims, he was not killed and duplicated but remains alive, albeit under Mysteron control. Through Black, the Mysterons relay instructions to their reconstructed intermediaries, while compelling him to undertake acts of murder and terrorism through their deep, disembodied voice (in which Black now also speaks). Black's unique position is of clear importance to the Mysteron cause and thus elevates him above any of their other agents. This is evident in the episode "Manhunt"; after becoming a radiation hotspot through accidental exposure, he can then be tracked by Spectrum. Capturing Symphony Angel while evading their ground forces, he deliberately subjects her to radiation inside an atomic centre, but does not kill her and allows her to escape. Spectrum officers give chase to the Spectrum Pursuit Vehicle that they believe contains Black, but is in fact being driven (badly) by Symphony. His ruse a success, Black decontaminates himself and makes his escape. Captain Blue's surprised remark of "So he is alive!" when he sees security camera footage of Captain Black implies that until then they thought he was dead. In various episodes, like "The Mysterons" and "Point 783", he demonstrates the ability to filter out his voice while speaking so only other Mysteron agents can hear him. According to text features in the comic TV Century 21 and related publications, Black was born Conrad Turner in Manchester, England (though until his corruption at the start of "The Mysterons", he speaks with a North American accent) and was orphaned at seven months as a result of a brief