Abilities: They have no supernatural powers but they're really good at acting and lying, and while they tend to be friendly they have big knowledge of the human psyche and know what to bring up to make someone feel sad or angry, usually for Coffe's own benefit, tl;dr: They're a fake empath (Psych2go has a good video about it)

Negative traits: They tend to be shy and humble but when they start getting too many things like money and power they can easily fall for it and become greedier, they're also prone to ruining friendships as they tend to struggle with comforting people and actually being empathetic, and as a fake empath they still have a lot of empathy which makes them sensible and since they struggle with words and conveying their emotions they usually tend to stay alone during breakdowns