Part-human, part-monster girls. Common examples include:
Does not include common animal-eared girls such as cat girls, or specifics such as demon girls or dragon girls, unless they show monstrous features beyond the classic horns/tail/wings.
The following tags are aliased to this tag: monstergirl (learn more).
The following tags implicate this tag: arachne, harpy, lamia, mermaid, plant_girl, scylla, and slime_girl (learn more).