Killian is originally from Dublin, Ireland.
Theatre includes: Tony in Billy Elliot the Musical (Victoria Palace Theatre), Raoul in The Phantom of the Opera (Her Majesty's Theatre), Enjolras in Les Misérables (Queen's Theatre), before which he understudied and played the roles of Jean Valjean and Javert, Collins in Michael Collins (Cork Opera House), Sweeney Todd (Gate Theatre, Dublin), Ethan Girard in The Full Monty (Olympia Theatre), Tony in West Side Story (The Solstice), Declan in The Wireman (Gaiety Theatre) and Rod in Singin' in the Rain (Olympia Theatre).
Workshops include: Pink in The Wall directed by Simon McBurney and Deco in The Commitments.
Concerts include: The Phantom of the Opera 25th Anniversary (Royal Albert Hall), Courfeyrac in Les Misérables 25th Anniversary (o2 Arena), You Should Be Dancing (National Concert Hall, Dublin) and Les Misérables (Bournemouth Symphony Orchestra, Isle of Wight).
Television includes: Showbands (BBC), The Last Furlong (RTE), Batchelors Walk (RTE), The Tudors (BBC), The Late Late Show (RTE) and Open House (RTE).
Film includes: Combeferre in Les Misérables (Working Title Films) directed by Tom Hooper.
Other credits include: Les Misérables Chorus in The 85th Academy Awards (Dolby Theatre, Los Angeles).
Killian is currently starring as Deco in The Commitments (Palace Theatre) directed by Jamie Lloyd.
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