is a type of Monomakia known as a Gun-Swordsman. He takes on the mission of protecting Marin for reasons he cannot tell her. He is very tall and humanoid in appearance, wears blue armor, and flies with a set of mechanical wings. For combat, he has a sword on his right arm and a laser gun on his left. He uses rice as fuel and can eat up to fifty bowls in one sitting. While he makes an excellent bodyguard, Melan understands little about human beings, but that begins to change as he spends more time among them and bonds with Marin. Lolo is a green, cat-like creature from Brigadoon who aids Marin and Melan in their adventures. He appears on Earth shortly before Brigadoon becomes visible in the sky and shows Marin where Melan's ampoule is located. At first he only appears to Marin as a sort of eccentric advisor and even leads her to where the ampoules of other helpful Monomakia are hidden. Later, he is revealed to be the chairman of the Life Improvement Committee of Brigadoon's Central Assembly. Moe is Marin's classmate and best friend. She has a weak constitution, is noticeably pale, and is very shy and quiet. She comes from a wealthy family and her mother does not like her associating with the less fortunate Marin. Despite this, Moe remains Marin's most loyal friend and does everything she can to help her. Her efforts are not always successful and she is often worse off afterward, but she believes they are worthwhile. The kanji of her given name comes from the word "moegi", meaning "light yellowish green". Nicknamed "Aloma" by Marin, he is a mysterious young boy who seems to know a lot about the Monomakias and Brigadoon. Good-looking and polite, he is usually eating something whenever he appears. When Marin first meets him, she assumes that he is an observer from the future, and his response suggests that this might be true. He also has a tendency to show up wherever a Monomakia is about to strike and appears to know more than he lets on. Tenement house Moto is Marin's adoptive grandmother, an energetic widow aged 68 years. She and her late husband Gen found Marin abandoned on the doorstep of the tenement house and decided to keep her. She is a very strong and independent woman who cares about Marin very much