Biography
Harry Callaghan, or 'Harry101UK', is a YouTube filmmaker, singer, composer and voice actor. He became relatively well known on YouTube for his rather good imitation of Stephen Merchant's Wheatley from Portal 2. Since then, he's written and produced several songs based in Portal, several music tracks for Portal mods and the fanfic 'Blue Sky', and some original tracks as well.
Biography text from Last.fm, available under CC BY-SA.