Atkin

Series One
Atkin is described as a thirteen-year-old kid with dirty blond hair and a dagger strapped to his waist. In the first book, Atkin gives Jonny a prophecy, and "disappears." In reality, he demonstrated his sun-shifting skills by turning into a sunsnake. In the fourth book, Atkin is infected with a rare disease that he secretly inflicted upon himself to test Chosen One and his companions, resulting in an adventure that takes Jonny, Kurt, and Aaron into the Vast Wilderness. In the fifth book, Atkin refuses to take part in the fight against the Ancient Demon King, saying "it is the Chosen One's duty."

Marus Spin-off Series
Atkin appears in the third book of the Marus series, and passes on the guardianship to Marus who is about to die. Marus becomes immortal, but Atkin dissolves, having lived thousands of years as the guardian. Becoming guardian gives Marus the ability to use his hyper-speed without his sword. Atkin's ashes are put in a place of honor for the great deeds he had done.