

Characters Who can speak but we as the audience never get to hear them(BONUS POINTS If they get cut off before they can speak
Erma the titular character of the Erma webcomic fits this trope as she is a she can speak but we never get to hear her. Any time she tries to speak she always gets cut off(My favorite example was the mushroom cloud one pictured above
Morn from Star Trek Deep Space Nine never says a word throughout the whole series. In universe he is a chatterbox who never knows when to shut up but we never get to see him talk.