Liz Thompson is a demon weapon and the older sister of Patty Thompson. Formerly a thuggish ruffian alongside her sister raised in the streets of New York, both her own and sister's life turn for the better when they encountered their future meister, Death the Kid. Eventually becoming Kid's weapon partner alongside her sister, she became a student of Death Weapon Meister Academy and enrolled in the E.A.T Class. After the fall of Arachnophobia, she was later recognized as a two-star weapon and was a member of Spartoi until the battle on the Moon against the Clown Army. While Patty is very child-like, Liz is very moody and more like a stereotypical teenage girl (worried about makeup, shopping, looks, etc). Despite mostly being the cool-headed and serious of the sisters, she is shown to be extremely afraid of paranormal things, convinced that any ghost she meets is out to eat her. She can also be a little cynical, jaded, and shallow sometimes, and sometimes takes advantage of other people for her gains. She can be flirtatious and can also be charming to men, mostly to deceive them. Both Liz and Patty admire Kid's dignified soul because they are from the streets. Unlike Patty, Liz finds the drama brought on by Kid's perfectionist attitude annoying. Also, Patty adores her and thinks that Liz knows everything. She is the older and more mature of the two sisters. Kid's obsession with symmetry and how he will let it control his life sometimes gets on her nerves and she frequently reprimands Kid for this, although she won't hesitate to cheer him up when he is depressed. She also displays wit, courage, and determination whenever her friends are in danger, and tries her best to protect them.