The Green Man

There is little know about The Green Man/Jack The Green Man, but is associated with Pagan beliefs. He stems from Celtic lore and is a sculpture or drawing of a man's face surrounded by leaves. He is found in many cultures and is usually related to natural vegetative deities. He is interpreted as a symbol of rebirth.

Tales of Evermagic
Jack the Green Man is the Spirit King of all Fae. He is the father of all with magic (save human magic-users), and is their caretaker. He is as old as the earth and a kind of sibling to Evermagic. He is very powerful but is a non-violent entity as he is a symbol of rebirth. The only time he has acted contrary is with the wizard Newt and once when he struck down a yōkai that had attacked other fae. Later he sent another to take care of the yōkai so he wouldn't die.

A Witch's Song
Jack the Green Man appears in A Witch's Song as Demoncurse, a sheep herding dog owned by Mr. Wolter, a sheep herder that captured Jack after he seduced his daughter.

Demoncurse acts as competition and antagonist for the wizard Newt. His facade is of a lecherous, arrogant, snobbish fae trapped in a dog's body, but later proves to have a tender heart and pleasant disposition.

After Nim's tale is resolved, Jack breaks the spell that is on him and escapes Mr. Wolter without the sheep herder being none the wiser.

The Green Man
In The Green Man, Jack gets his own story. Without a real plot to his life, the magic of Evermagic finally grants him his wish and teaches him what it is to love by introducing him to Sabina, a woman born in the clan of Alaric, a name which Jack sometimes uses for himself.

Due to his interest in Sabina, Jack (as Alaric) fires the innkeeper at the inn Sabina owns and takes over her role while teaching Sabina how to do it herself. He falls in love with her, and to save her from a demon traps them both in a world where she can never die, only for her to then die multiple times causing their story to start over in different scenarios until they finally escape.

The Sakura Girl
Jack The Green Man appears in The Sakura Girl as the Spirit King who sends Ales ( a girl reliving a Penta Girl's fairy tale) back in time to save the yōkai, Takehiro, whom he had wounded in saving some other fae.

In the end, he is the magician from the story of the Penta Girl and concludes the story.