Blackerfly

A blackerfly is a black lepidopteran creature in Supernatural Stars Pretty Cure, responsible for transforming people into Gosutos. An army of blackerflies is created and led by the villains while the Cures are tasked with capturing and purifying them.

Before it is turned into a blackerfly by the villains, the pinkerfly is pink. However, once it becomes an blackerfly, it turns black with translucent purple highlights.

The pinkerfly in it's chrysalis form is the same color.