[2] Bán Breathnach played the role of Jimín Ó Gríofa in the Irish language series, Aifric.
Cárthach also played the role of Aodhán, a secondary school student posing as a doctor, in the soap Ros na Rún.
[citation needed] His twin, Léan Bán Breathnach, also acted in both Aifric and Ros na Rún.
[citation needed] Bán Breathnach worked as a DJ on the local west of Ireland radio station i102-104.
[3][4][5] At university, Breathnach was involved with NUI Maynooth GAA and a member of their Sigerson Cup football team.