Billy Murphy

William 'Billy' Murphy is a major character from the Irish comedy franchise "The Young Offenders". He is the local "nut-job", who carries around a knife and regularly mugs locals, including Conor MacSweeney. To get revenge on Billy for mugging Conor and stealing his phone, Conor's best friend Jock O'Keeffe purchases a mask from an online shop which make masks if you send in a photograph of someone. Jock wears the mask and steals a bicycle belonging to local police officer Sergeant Tony Healy, and Billy is jailed after when they go to his home to question him, they find him in possession of drug plants. When released, Billy follows Jock after he steals alcohol from a local store wearing the "fake Billy" mask, and the security guard who chases after Jock, and asks Billy if he saw fake Billy. Jock takes off the mask after hiding behind a bin and puts up his hood. He follows him onto the bus, and takes hostage of the bus after Healy sees him with a knife in his hand. However, Billy does not know that Jock is "fake Billy", but does ask him if he is him as he is wearing the same grey hoody that "fake Billy" was wearing, but Jock insists he is not "fake Billy".