Jonah Ravenwood is the brother of Abraham Ravenwood and a Light Incubus. He was killed by Abraham Ravenwood for trying to stop Abraham from using the Book of Moons by plotting to trap him in an Arclight. He first appears in Beautiful Darkness in flashbacks.
As an Incubus, he has a strong amount of physical strength that is compared to a 2x4 impact and high speed. He can "Rip" or "Travel" (teleport) to other places and also hear, smell, and see things that no Mortal or Caster can. As a Light Incubus, he sustained himself on the dreams and memories of mortals instead of human blood.