Pararoid (パラロイド) is the weird dragonfly enemy in Morph Moth's stage in Mega Man X2, and two of which enter into large Mechaniloids. Destroy the dragonfly to destroy the mechs as well.
There are three types in Mega Man X2: S-38, V-1, and R-5... according to the end credits.
Types of Pararoids
Pararoid S-38
Pararoid S-38, alias Metaroid, are specialized Pararoid that inhabit large robot bodies (Old Robots) and serve as the midbosses of Morph Moth's stage. There are two of them. Destroy the Pararoid to destroy the giant robot as well.
Pararoid R-5
R-5 are the winged non-boss Pararoid variety. They try to ram X.
Pararoid V-1
Unlike the R-5, the V-1 variety are wingless, but they hop about and try to latch on to X's head to either cause him to rapid-fire as fast as the game can manage (sometimes quite useful), to jump repeatedly or to dash repeatedly.
Pararoid Jumbo
Pararoid Jumbo (パラロイドジャンボ) is a bigger winged Pararoid from Mega Man X5 that can cling to ceilings and shoot missiles. It appears in the stages of Dark Dizzy and Mattrex.