who are the characters?
Martha, Ash, Victoria Skillane, Baxter and Jem, Jamie Salter, Gwendolyn Harris,Jack Napier, etc.
Black Mirror

"Be Right Back" stars Hayley Atwell as Martha and Domhnall Gleeson as Ash, both in human and robot form. In "White Bear", Lenora Crichlow plays Victoria Skillane and Michael Smiley and Tuppence Middleton play Baxter and Jem. "The Waldo Moment" features Daniel Rigby as Jamie Salter, Chloe Pirrie as Gwendolyn Harris and Jason Flemyng as Jack Napier.
what is the meaning of metalhead in black mirror "Metalhead" is filmed entirely in black and white, and follows the plight of Bella (Maxine Peake) trying to flee from robotic "dogs" after the unexplained collapse of human society. when was it premiered? The episode first aired  on 29 December 2017 is this a series? No, "Metalhead" is the fifth episode of the fourth series of the anthology series "Black Mirror" where was this aforesaid series aired? The series premiered for two series on Channel 4 after its addition to the catalogue Netflix purchased the programme who produced it? UNANSWERABLE where did the filming take place? England, largely in Devon and around London how many seasons does the series have in all ? Five what is the series about? It examines modern society, particularly with regard to the unanticipated consequences of new technologies, episodes are standalone, usually set in an alternative present or the near future, often with a dark and satirical tone, although some are more experimental and lighter
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Black Mirror [SEP] Series 2
Series 2 consists of three episodes. Brooker described it as "more epic in scale, but more intimate in scope". The episodes are more "understated" in their technologies. Brooker commented that the second series mirrors the first: the first series has topics of (in order) "warped political satire", "dystopian hellscape", and "relationship torn apart by technology", while the second series presents episodes of these forms in reverse. Each episode in the first series had a male protagonist, so Brooker deliberately wrote female protagonists for series 2 episodes "Be Right Back" and "White Bear". A trailer for the second series was made by Moving Picture Company and featured three interspersed storylines: "a dream sequence, the repetitive factory setting and the huge dust cloud that sweeps through the street at the ad's climactic end." Aired from 22 January 2013, the advertisement was shown on Channel 4 and in cinemas.