If you have access to the Internet, and use it for something other than checking for winks on Match.com,  you may have read how the lovely folks at the Large Hadron Collider (LHC) have discovered a new particle they believe to be the Higgs boson, affectionately known by us laypeople as the “God particle.” The LHC is a 17-mile tube situated a football field or so below ground outside Geneva, near the Swiss-Franco border.  In this tube, ridiculously smart physicists are able to accelerate tiny particles called protons to nearly the speed of light by using 1,600 superconducting magnets, each of which weighs almost 60,000 pounds. And for these magnets to work properly, they must be cooled to a soul-crushing temperature of -456.25 degrees Fahrenheit, which is two degrees colder than outer space.

In fiction, one common and generic way to refer to well-drawn, realistic characters is to call them “round.” As in:

…characters as described by the course of their development in a work of literature. Flat characters are two-dimensional in that they are relatively uncomplicated and do not change throughout the course of a work. By contrast, round characters are complex and undergo development, sometimes sufficiently to surprise the reader.

2009. Encyclopædia Britannica Online.