Kulumil is a young fairy who lives in the Alpa Forest. She is tiny in stature, with purple hair styled in two pigtails, small pink insect wings, and simple facial features comprising three lines for eyes. Her clothing consists of a small white dress decorated with pink bubble marks. During the events of The Seven Deadly Sins: Grudge of Edinburgh, an army of Empties storms the forest and captures the fairies Gandf and Recela. Kulumil witnesses this alongside her companions Minika and Tyrone. Before she can be taken as well, a mysterious fairy intervenes and saves her. Showing presence of mind, Kulumil convinces Minika and Tyrone to flee the immediate danger and later search for a way to rescue the captured fairies. Her personality suggests bravery and a persuasive nature in moments of crisis, though her character is not explored further. Her key relationships are with the other fairy children Minika and Tyrone, and she interacts briefly with the unknown fairy who rescues them. No notable magical or physical abilities are demonstrated, and her role does not include subsequent appearances or development.