Frimon

Frimon (フリモン)
A Lesser Digimon possessing a frill on its neck. Its frill was made from a hardened portion of its hairs, and by covering its body with the frill when danger approaches, it can be used as "Armor" to protect its body. Since it is extremely full of curiosity, it has a habit of responding to anything that moves, but because it also responds to its own tail, it chases after it, and is often observed spinning in place. Increasing the centrifugal force in its long tail (Shippo Binta) is a power in itself, and it occasionally seems that even a Child Digimon will instantly faint if it is hit cleanly.

Etymology
Fri: From Frill (フリル), which means something resembling such a trimming, as the fringe of hair on the chest or neck of some animals or in this case, resembling that of the frill-necked lizard.