On 24 September , his new ring name was revealed to be Finn Bálor , derived from Irish mythological figures Fionn mac Cumhaill and Balor ; the latter is also Gaelic for `` Demon King '' .
On September 24 , 2014 , it was announced that his new ring name would be Finn Bálor , which is derived from Irish mythological figures Fionn mac Cumhaill and Balor , the latter also being Gaelic for `` Demon King '' .