If you want a character to stay on while the narrator speaks, the code would look like this:
WILLIAM (talk_mindblown)
Yo, Diana, your superpowers are so wicked!
NARRATOR (DIANA) ((character_stays))
Did William mean my powers are wicked awesome or wicked creepy?!
*This is just an example. I used random characters-also this code only applies to the last character that was on stage. That last character was William so when the narrator speech bubble appears with Diana thinking this, William is still on the screen.
Want to hide a character on stage? Can use the command hide CHARACTER
CREDIT @JemU776