If you don’t want to display the character image, please disable the image display option.
uncheck (disable) the [Character > Show Character] button.
If you want to apply the setting to all slides, click the [Apply to all] button.
Click the [Apply to all] button, and you will see the options window as shown below.
> Make sure the Show Characters "Off" option is checked.
> Select > Slides of selected character or Slides of all characters to select the range of sentences to apply.