At the end of E3, Hob, feeling better about her situation on Mars, rewards David with a biscuit. You can even hear him crunching away at it right before the end credits start.
Zack Guzman, the Orange janitor, doesn't seem like a particularly cheerful fellow from his introduction. We later find out from David that his office is adorned with motivational red panda posters and his favorite pastime is sitting in his bath pretending to be an island.
Since none of the robots were around when it finished, Chip's voice actor, Emma Stirling, received the prize: a pat on the head.