One of the two most important of the 47 varieties of Borinyum Krystals, so named for the middle initial of Dr. Proserpina K. Dowd, inventor of the Krystal Drive (though the right to this title is still in litigation). It is thanks to the “K” in K Krystal that all varieties of what were formerly known as Borinyum crystals began to be referred to as Krystals.