Escher Technologies is a facility much like Aperture Science, only more stable, or so it seems. You a test subject that is testing new technology that can warp gravity, bend reality, and more. More will be revealed further on during development.
The new mechanics consist of gravity switching, such as walking on walls, and ceilings. And also space warping geometry, making impossible chambers.
Voice actor/actress [✓] - Found one
Texture artist [✓] - Colossal