Frankenturrets are hybrids of Aperture Science Weighted Storage Cubes and two Sentry Turrets. They are made by Wheatley during the course of Portal 2. No official name has been given for the turret cubes, Frankenturrets being the name used by the Portal 2 developers in the commentary tracks referred to in the developer's commentary (they may also be called "box creatures", which is the name they given in Portal 2's sound files). The Perpetual Testing Initiative (PeTI) refers to them as Franken-Cubes