Pollock is Frida's pet robo-porcupine who appears in the Disney Jr. animated series, Miles from Tomorrowland. He lives at the Martians Artists Commune on Mars, and is a very helpful companion during Frida's art hikes.
The glowing quills on his back are actually paint brushes that Frida uses for her paintings and they can also extend to become poles for all sorts of purposes, such as hiking, climbing, and pole vaulting. His other features include gravity feet to help him scale mountain walls and can hide his quills whenever he hitches a ride on someone's shoulder.