prompt: demon

[charisstoma]

tsuki_no_bara posted about Titivilluas :

there's a demon of typos. heh. would his opposite be the patron saint of proofreaders?

I found this site:
Titivillus- the patron demon of scribes

Titivillus (also spelled "Tutivillus") is sometimes referred to by modern writers as the "patron demon of scribes" (or of calligraphy).