Sarah - Companion Cube (Portal)

Companion Cube (Portal) by Sarah.

Portal - Taking the Companion Cube to the End

companion-cube-cake-portal

ArtStation - Rubik's cube animation

Making the Portal Cube (Companion Cube)

Cubes - Portal Wiki

Thran Portal - Cube Cobra

GLaDOS, the Voice of Postfeminist Control

Where to Find Secret Companion Cubes in Portal Reloaded

Portal Companion Cube Tissue Box by Riker the Sergal, Download free STL model