Malmoth is a demon of fire of uncertain origin (perhaps inspired by the novel of Irish writer Maturin: Melmoth the wanderer, the spelling of the two is almost identical). At the beginning of the series, he is undefined, manifesting through a cloud, lightning, tree or rock (when Clementine had an accident). From episode 5 we see his true appearance as a fire demon (the cloud form reappears in a timely manner thereafter).
Malmoth has a strange fixation on Clementine, wishing to have her as a companion for eternity, to torture her with love. Countered by Hemera, he sends his minions to bring him the girl. When they fail, he transforms them into slimy creatures who are sentenced to crawl in his lair for eternity. Finally, Clementine finds the courage to confront him and that act allows Héméra to kill him.
Malmoth powers are unclear. He rarely leaves his lair and manifests on Earth in various ways (cloud, fire, etc..). Among his evil deeds, he killed Professor Delatrousse, injure Alex in the form of flame (Africa), throwed heat rays (Arab), created a demonic sword (Japan) or returned Clementine and Alex in the past.
About TV series
Clémentine is the daughter of a famous French pilot and war hero Alex Dumat, who raised her alone with her brother Petit Boy. After she lost the use of her legs in an airplane accident, she travels the world with her family to find a cure that will allow her to walk again. Meanwhile, in her nightly dreams, she can walk and her cat Hélice (French for "propeller") can talk and fly with the help of a helicopter-like apparatus on its head. Clementine leads a battle against the demon Malmoth, with the guidance of her guardian angel Héméra, travelling in a magical blue sphere. Occasionally, in these travels through fantasy and time, she meets famous fictional characters such as Pinocchio, Aladdin and Oliver Twist. She also frequently meets historic characters, especially aviation pioneers such as Charles Lindbergh, and Kateri Tekakwitha.
The series creator, Bruno-René Huchez, based the main plot on his own personal childhood memories. When he was young, he fell very sick and was confined to a bed, and his mother used to tell him all sort of fairy tales to cheer him up. Those events, decades later, would become the basis of the show's main plot.