I'm thinking Jack, because he knows that can't by games or toys, that stuff can't go with them into an alternate dimension, so he likes to laugh as Zvezda tries to get Luna to let him buy the teddy bear.
Luna would rather be anywhere else, because between Jack being a dink, Neggero/Negra passing out in the car, and Kolasi fussing over supplies, she's the one who has to keep Zvezda from buying the whole toy isle while simultaneously keeping Jack from encouraging Kolasi to overspend on food and clothes.
friend group: tag the oc that thinks dragging the others to walmart is a fun time, and the oc that would rather be anywhere else