Mantis

Mantis is a mantis-like monster that is an expert of martial arts. Although it has sharp scythe-like legs, it refuses to use them and mostly does kicking and punching for the honor of the martial arts fighter. It wanders about fields, waving a tiny fan. An entire martial arts style is based on the movements of this insect.

Ragnarok Online II
In RO2, there are 3 varieties of this monster:
 * Mantis
 * Giant Mantis