Tray is the brains of the bunch, not because she is smart, but because she has three brains -- one in each lump (or one per eye, as Babo likes to point out). Tray also has a desperate need for blueberry pie -- some say her eyes are blue because of her craving for it!
Tray often combines her hunger for pie with her brainpower to talk Babo into getting food for her. Unfortunately, Babo usually brings back a branch, a rock, or something even less tasty. If you want to make Tray extra happy, sit her next to you in the subway or car. It makes her feel important.