Greg (Character)

Greg was a cut chracter from Portal 2, he was supposed to be Cave Johnson's assistant and a Scientist. He was created as someone to play off of Cave Johnson during his recordings throughout the game. The development team found it a waste of money to a new voice actor for him so they re-used the voice of Ellen McLain as Caroline. Greg is mentioned multiple times in the Perpetual Testing Initiative, where he is only heard as a mumbled voice. In the main Portal 2 universe, Greg is canon and is confirmed to exist, just not appear in the game, this is verified by a Cave Johnson line chastising Greg for letting his Daughter into his room.

The Greg model used in the official Portal board game's card of him is a modified model of Half Life 2 Episode 2's Magnusson, he sports an Aperture Science logo on his suit and is depicted as being balding in comparison to the original Magnusson model.