/usr/bin/Charmap is in charmap.app 0.3~rc1-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/../lib/GNUstep/Applications/Charmap.app/Charmap
/usr/bin/../lib/GNUstep/Applications/Charmap.app/Charmap