Lamp

Official Description
Lamp is a very quiet contestant, but behind that unassuming nervousness is a rather snarky and sarcastic personality and a mind full of ideas and strategies. She is best friends with Speaker, who cares for her more than anyone else. Since she is easily scared by his shouting, he always makes sure to warn her before he goes off at someone.

She often feels self conscious about her sensitivity to her own bright light and her unwillingness to use it, as she feels like she's a failure of a Lamp ("I mean, my whole purpose is to light the way, right? What good am I if I can't even do that?")

She never talks about why she joined the show in the first place, but she seems keen on winning. Since Speaker is planning on sharing half of his earnings with her, others speculate she'd do the same with him.