Liam Heffernan is an Irish actor, theater director and musician best known for his lead role in the critically acclaimed film The Clash of the Ash (1987), and later as the traveller Blackie Connors in the long running RTÉ television drama series Glenroe. Heffernan's music career began in the early 1980s as the guitarist with Mean Features, who were active during Cork city's post-punk scene. His currently the lead singer and a guitarist with Big Boy Foolish.