The Humani Chronicles
The Humani is the last of the collective Humanis, guardians over humans. He has access to all the layers and a blood bond with a layer can only be made if gone through him. He made a vow never to personally harm a human, and thus has decided to never interfere with humanity, resigning himself to merely watching them. He gives Milo the power over wind when Milo convinces him that humanity is corrupt and should be destroyed, but later regrets this and gives Tobias the power over senses to stop him. He then gives Damian the power to heal, planning to make him his apprentice someday, and then Corinne the power over time, without fully knowing how it will work.
In Dalvari, he tries to convince Damian to join him. In the end, Damian agrees.
By Wind Charmer, he and Damian have had a parting of ways, but he is still fond of him and volunteers to bond Cassidy to the light layer when she is injured as a favor to him. In the end, he is killed, and the his powers transfer to Damian.
In Time Wielder, he is seen throughout many different ages as Corinne travels about. They eventually become friends of a sort, but he always dies at the point where he died at the original timeline.