Fact Sphere



The Fact Sphere is a corrupted personality core that appears in the single-player campaign of Portal 2.

The Fact Sphere speaks like a stereotypical "know-it-all", spending most of its time rapidly rattling off various facts. While a small portion of the listed facts are true, most of them are incorrect and downright illogical. (He basically distorts most of those facts.)

The Fact Sphere, along with all the corrupted cores, is voiced by.