Jasper Jordan is a major character in the first, second, third and fourth seasons. He is portrayed by Devon Bostick and debuts in the series premiere. Jasper is part of the original 100. He was arrested along with his best friend, Monty Green, for stealing herbs from the Ark garden and sent to juvenile lockup. Jasper is a Gunner for the Delinquents against the Woods Clan. Jasper also serves as the primary chemist for the 100's time on Earth.