1. What does it mean?
Literally 'ending fairy,' 엔딩요정 refers to an idol's closing-camera moment after a performance, or the performer featured in it. A look, pose, wave, or playful expression can become the focus.
Also written or said as 엔딩 요정, ending fairy, endingyojeong
2. The nuance
It is a fan and broadcast expression, not a permanent position within a group. The closing shot may feature different members or several people, and does not need to be cute to count.
3. Examples
“오늘 엔딩요정은 카메라 보고 작은 하트를 만들었어.”
Today's ending fairy looked into the camera and made a little heart.
“마지막에 다 같이 웃어서 단체 엔딩요정 같았어.”
They all laughed at the end, so it felt like a whole-group ending-fairy moment.
Sources
KASIODA: Korean language and K-pop guide
References support the meaning and usage. Example sentences are written for NoCapWiki.