Jude Lowe is Claire Lowe's brother and Mara Dyer's ex-boyfriend. He is supposed to be dead but it's proven otherwise in The Evolution of Mara Dyer.
It is later found out the that Dr. Kells of Horizons managed to fabricate Jude's genes have abilities. Kells was trying to replicate Noah's power of healing, which she managed to do, but Jude only heals by feeding off of people's health. Jude ends up killing a police officer due to the fact that Jude was hurt and he feed off of the officer's health. Jude's power made it seem as if the officer had a heart attack.