Be is better known as BennyHillium, one of the 9 elements of the periodic table.
BennyHillium is a soft, rubbery, wooden metal which can be forged and welded to create anything from ocean liners to robotic supercomputer-driven monsters of incomprehensible evil, and is favoured by mad scientists, primarily for its ability to become invisible for 97 percent of the time.
It has been put to use most famously as a means of constructing the H.M.S. Invisible, the star of the British Naval Fleet, which is a bugger to find on a dark and/or foggy night.
It is also being touted as a cure for cancer in some scientific circles.