Cave Johnson Lines in Portal 2 DLC
Cave’s back, this time speaking to you from different dimensions and universes as you’re floating through space in a testing satellite. As always, rest assured he’s got everything under control.
These get played randomly as you enter custom test chambers. The voice actor is J. K. Simmons, who while he’s been in tons of films and series is probably best known as JJ Jameson from Spiderman to most of you.