Mukuro is very cold, deadpan, and comes off as rather emotionless and apathetic in regards to other people and their emotions. Due to her devotion to her sister, Junko, she has very little interest in any hobbies or forming connections with others, and her goals mostly revolve around helping Junko achieve what she wants. She tends to be very awkward and monotone in conversation, saying "Um" a lot. In combat, she's extremely skilled and her entire demeanor will become much more confident.