Trivia / Harry101UK

• Harry Callaghan has appeared in the following works:
  • The audiobook adaptation of Blue Sky (Waffles) as Wheatley.
  • The Underground as The Mainframe.
  • Portal Stories: Mel as Cave Johnson, AEGIS and the Rainbow Core.
• Development Gag: One of the gels Aperture Science made was a purple gel that allowed test subjects to walk on walls. However, the gel was never used because it gave the subjects motion sickness.
• Man of a Thousand Voices: Callaghan voices many of the characters in his videos, and has also appeared in other Portal-related productions such as The Underground and Portal Stories: Mel.
• Retool: A lot of work Harry is involved in rescues old, unused material.
  • The Pit Song was originally meant to appear in The Underground before it was thrust into android development hell. The song was finished and animated three years later on Harry's channel.
  • Several tracks from the cancelled Tier3 mod were used in Aperture Tag.
  • Ellen McLain and her husband John Patrick Lowrie wrote a song for GLaDOS to sing in Portal 2. They recorded it in their living room and offered it to Valve for use as an Easter Egg in the game, but the song went unused. Harry mixed the song in GLaDOS's voice to Lowrie's approval in 2015 and made a music video.

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