It actually makes a lot of sense that Brownie is a butler in this game. In traditional British folklore, brownies are household spirits who would do chores for the owners of houses.
Apologies in advance if this sounds mean but, Raindrop Cake became wheelchair-bound following him believing that he drained the lifeforce away from his previous Master Attendant and him developing a pessimistic attitude towards himself. In a sense, he has crippling depression.
In Black Tea's backstory, there is a scene where Sweet Tofu straight up drugs her to knock her out. Given Sweet Tofu's generally creepy behavior and how his bio states that he likes Black Tea, the implications of what could have happened had Milk not rescued her are rather unpleasant.
