Romus

Series One
Romus is described as "a boy that kind of looked like (Jonny)", and is seen, in Jonny and Marus' shared dream, killing Jonny with a stab in the chest, and attempting to kill Marus, at which he fails.

Series Two
Romus is first seen as a handsome young man on Earth, but in reality that is a magical hologram of him, created to guide humans to the Radiant Realm. He is actually being imprisoned in Spritenland for a crime he didn't commit. The prison he was in preserves his age, and he stays 13 for a long time. He develops a crush on a girl from Earth, who proves to be Aaron's daughter, Alia. It is revealed he is Jonny's son, and that Jonny had imprisoned him. To get revenge, he kills Jonny, and attempts to kill Marus. As soon as the dark deed is finished, Romus realizes what he had done, and weeps over his dead father. To atone for his sin, Romus embarks on a series of quests given to him by Marus.