noncharacter

Noun

 * 1)  That which is not a character unit of text.
 * 2)  One of 66 code points (the 32 code points  –, plus the last two code points—  and  —of each of the 17 planes) which are guaranteed never to be assigned and are intended for process-internal use.
 * 3) That which is not a character, as in literature.
 * 4) A fictional character in a piece of literature or other media that lacks distinct personality traits, depth, or development.
 * 1) A fictional character in a piece of literature or other media that lacks distinct personality traits, depth, or development.