Jack is a crafty boy who lives in the forest and becomes a close companion to Snow White. His background is that of an orphan, and he positions himself as a helper and friend to the princess during her adventures and misadventures after she is forced to flee from the castle. In terms of personality, Jack often masks his deeper feelings for Snow White by teasing and annoying her, though this behavior conceals a genuine affection for her wellbeing. He is known to be resourceful and intimately familiar with the natural world around him.

Jack's primary motivation revolves around his desire to help and protect Snow White, even as he struggles with his own complex emotions for her. His role in the story is significant, as he is revealed to have a special connection to the forest itself; it is eventually discovered that Jack is the king of the wood, a lord or prince of the elves and fairies who inhabit the enchanted forest. This status grants him unique authority over the natural realm. His key relationships include his friendship with Snow White, who does not reciprocate his romantic feelings as her heart belongs to Prince Richard. He also falls under the manipulative influence of the evil Queen Chrystel, who at one point dominates him and uses him as a pawn to kidnap Snow White and lead her into a trap in the enchanted forest.

Throughout the series, Jack undergoes notable development. He is shown to be susceptible to the Queen's control, being ordered to deliver poisonous flowers to Snow White. However, upon confronting her, he cannot go through with the plan and instead confesses his love for her. Later, when he kidnaps Snow White on the Queen's orders and takes her into the magical woods, the resident elves and fairies recognize him as their lord and prince, revealing his true heritage and the fact that he alone possesses the ability to leave that otherwise inescapable domain. Among his notable abilities, Jack can communicate with animals and trees, a power that aligns with his identity as the king of the wood.