Maxilla is a female monarch butterfly. The Kratts met her as a caterpillar, and when she was a butterfly, they followed her all the way to Mexico. After surviving the whole journey, she was able to lay an egg, and soon after died, due to the short life cycle of the butterfly. Martin named her child Maxilla Jr. In Princess Pinky's vlogtastic vlogs, she is called Maxilla Melano De Guzman and has siblings. Her siblings are Marie and MacKenzie.