Stella is an empty water bottle, presumably plastic like Bryce. She is slightly slimmer than him, and has a grey cap and a blue label, which is striped with lighter blue on half of it. Stella appears to be fond of Bryce, as she watches over him at the park and asks him to go out for lunch to distract him from the subject of their mother. She is a cheerful person, happily waving and calling out to the present Bryce