Devola is a bard and regular performer at the tavern in the village as well as the one who gives Nier side quests. According to Nier, Devola becomes very ‘friendly’ when she drinks and so rarely dose so. Along with her twin sister Popola they run the village and look after Yonah while Nier is away.
Devola and Popola actually work for ‘Project Gestalt’ and have lived for thousands of years as a result of the experimentations. They are charged with keeping an eye on other experiments and to act as support when the day came for the ‘Gestalts’ to return to their ‘Replicants’. The ‘sealed verses’ originated from Devola and Popola who claim to have loaned Grimoire Weiss only a fraction of their power, meaning their magical abilities are far beyond that of Weiss’s.