Friar Rush

Surviving editions present Friar Rush as a non-human, disruptive agent who arrives at a monastery posing as a friar (named in early texts Broder Rusche/Bruder Rausch) and is hired as a kitchen servant. The figure is framed in the narratives as an other-than-human intruder — in summaries often identified as 'the devil' — who exploits clerical disguise to undermine monastic order. The tale appears in print from at least 1488 (Low German) and was adapted across Germany, Scandinavia, the Netherlands and England through the 16th–17th centuries.

Narrative sources give no detailed non-human physical description; the central identifiable appearance is his assumed clerical guise — he appears and is accepted as a friar or kitchen servant. Editions emphasize his role in posing as 'Bruder Rausch' rather than describing distinct monstrous features.

Friar Rush infiltrates religious houses by disguise, serves undetected (notably as a cook for seven years), commits violent acts (e.g., throwing the cook into a boiling cauldron and taking his place), incites sexual immorality among monks (procuring women nightly for the abbot and others), causes continual commotion and strife, and in some versions travels and possesses laypersons (the High German variant has him possessing the king's daughter). He resists ordinary discipline and is expelled only by formal ecclesiastical rites performed by authoritative clerics (mass and exorcism by an abbot).