Within the series narrative, Hal serves as a soldier in the Battle of Orsha on 8 September 1514, when he is turned into a vampire by an army surgeon.
[1] In the early 20th century Hal joins forces with the werewolf Lady Cathrine, and the ghost Emil, to defeat the devil, who benefits from the war between vampires and werewolves.
Therefore, the trio is incomplete and instead of being defeated the devil is only weakened and escapes in the vessel of a mad man.
[1] At the beginning of the series Hal lives in a barbershop in South End, together with Leo, a werewolf, and Pearl, a ghost.
[3] Furthermore, the Old Ones, who have been hiding in South America for last centuries are returning to the United Kingdom and plan to take over the world.
Being more than 500 years old Hal finds it easy to adapt to situations while his friend Tom grew up in the woods and hasn't a lot of experiences.
The devil, who appears as a guest in the hotel, tries to egg the friends on, to argue with each other because he feeds on the conflict between vampires and werewolves.
However, Damien Molony adds that Alex also represents the bad in Hal that he has been running from.
[3] After the departure of Aidan Turner (Mitchell), Russell Tovey (George) and Sinead Keenan (Nina), the producers of Being Human decided not to cancel the series but to renew it.
[13] Damien Molony did a drama showcase in February 2011 when the casting director of Being Human made a visit.
Molony moved to Cardiff the following week and stayed there for the next six months to do costume fittings, rehearsals and the filming of Being Human.
[16] Before the new series was shown on television, a short online prequel with Hal was released in early January 2012.
The prequel introduced the character to the Being Human fans and showed a bit of his background story.
Films within the Bram Stoker, Nosferatu era helped him to play the vampire Hal, who doesn’t really know how to live a modern life.
[14] According to Molony, Hal can be quite calm, quite contained and live a very basic life for several decades, but then he suddenly turn into his former self and be aggressive, rape, torture and kill everything he sees.
[3] Lenora Crichlow mentioned that Damien Molony brought "a whole different intensity to the vampire".
[25] According to Mark Oakley from Den of Geek Damien Molony "delivers every line with a gravitas that lights up any scene he’s part of."
[27] Ian Berriman from GamesRadar thinks that Hal falling off the wagon in the end of series five is horrible to see and Damien Molony’s performance is "perfection itself".
[28] Malcolm Stewart from the Cultbox believes that Hal's and Tom's double act is one of the highlights of the show.
[29] Morgan Jeffrey from Digital Spy adds that the characters are fantastic individually, but are unbeatable when they are together.
He mentioned that television critics as well as Being Human fans, were sceptical that anyone could fill the "charisma void left by Aidan Turner, but Molony slotted in seamlessly".