Horong

 is a monster that looks like death fire. It never has been identified where it came from or why it appears in the realm. An eerie-looking violet fireball. It's useless to use hiding skills near this vengeful spirit.

Ragnarok Online II
In RO2, there are 3 variations of the Horong:
 * Horong
 * Evil Horong
 * Punished Horong

Trivia

 * is based on the international folklore of the will o' wisp.

Patches
Ragnarok Online Ragnarok Online II
 * Patch (2017 Aug. 16)
 * Monsters that drop arrows are changed to drop quivers instead.