Velvet worms are adorable members of the Onychophora phylum. A pedomorphic lepidopteran would basically be a butterfly that still resembles a caterpillar. Polychaetes are marine segmented worms (annelids) with "feet" called parapodia. Also, it's remarkably hard to draw recognizable rainbows in a black-and-white medium. Finally, any resemblance between characters in this comic and toys produced by a large, Rhode Island-based corporation is completely unintentional.