Not much is known about Umbriel’s personality. However, she is mute, and doesn’t speak at all. She is able to judge others' intentions. She has a ISTP ( Introverted, Sensing, Thinking and Perceiving.) An ISTP is energized by spending time alone and having quality time with people they care about, so it can be assumed that she is somewhat clingy. Her "Personality" according to the Holland Personality test is ISA (Investigative, Social, Artistic.)