Being 300 years old, they are the youngest among the gems. Their hardness is 3.5, low compared to most of the other gems. They are brittle and weak so they are not suited for battle. Despite being clumsy and ineffective they were given the job of completing an encyclopedia. They want to find new job for Cinnabar, who patrols at night and lives distantly from the other gems.

A girl in class 1-A. Her Quirk Frog gives her a frog-like appearance and abilities such as superior swimming, a tongue that can stretch 20 meters, sticking to and climbing vertical walls, superhuman leaping, and numbing poison. She has a type of plain and normative personality, but she is insightful, intelligent, and ready to protect the innocent. She is also sharp, being the first one in the class to notice the similarity between Izuku and All Might's Quirk, which briefly panicked Izuku. (Source: Wikipedia)