noncharacter

noun4

1. •
   A fictional character in a piece of literature or other media that lacks distinct personality traits, depth, or development.

   • She’s a non-character hyped up to sell merchandise. — 2023
2. •
   That which is not a character (unit of text).
3. •
   One of 66 code points (the 32 code points U+FDD0–U+FDEF, plus the last two code points—U+...FFFE and U+...FFFF—of each of the 17 planes) which are guaranteed never to be assigned and are intended for process-internal use.
4. •
   That which is not a character, as in literature.

   • Like the noncharacter at the center of Who's Afraid of Virginia Woolf? the screen's nonimage and the man it effaces enable other forms of repression, […] — 2009