Here is a list of the first words of all main characters in the series. (starting from Cinder, not Stars Above )
Cinder - "It's not like wires are contagious."
Kai - "I'm sorry, I didn't realize anyone was back there."
Scarlet - "Accept!"
Wolf - "Thank you."
Cress - "Hello?"
Thorne - "I'm sorry. It seems you've stumbled into the wrong jail cell. Do you need directions on how to get back to yours?"
Winter - "My Queen?"
Jacin - "I don't suppose you killed her?"
Iko - "Cinder! I've got it!"
Kinney- "Yes, Mistress Pereia."
Levana - "My dear Prince Regent, may I be the first to offer my condolences on the loss of your father, the good Emperor Rikan . May he forever rest in peace."