Felix is a member of the Ignauts, a rebel group operating in the world of Endra. He is a young man with a lean build, characterized by his short, white or silver-colored hair and blue eyes. His demeanor is typically silent and cool, presenting a calm and reserved exterior that makes him a man of few words. This quiet nature is a core aspect of his personality, as he rarely speaks out of turn or seeks attention for himself.

The defining trait of Felix is his absolute and unwavering loyalty to Demetrio, the leader of the Ignauts. This deep devotion is not accidental but stems from a pivotal event in his past. Before becoming a rebel, Felix endured a difficult life, forced to survive on the streets where he was frequently alone and subjected to bullying and mistreatment. His situation changed dramatically when Demetrio reached out to him, offering him aid and a new purpose. Having been saved from a harsh and hopeless existence, Felix came to view Demetrio as his savior, and this gratitude evolved into an intense, unshakable admiration. He follows Demetrio's orders without question, placing complete faith in his leader's judgment and vision.

Because of this absolute trust, Felix does not exhibit leadership traits of his own. He is defined by his role as a faithful follower and enforcer, supporting Demetrio's strategies rather than creating his own. While this might make him appear as simply the muscle of the group, with the all-powerful but no-brain archetype, his abilities are a vital asset to the resistance. His primary function within the Ignauts is as a capable fighter. He is physically strong and skilled in combat, often taking on the role of the group's knight or primary protector in dangerous situations.

In his interactions with the wider cast, Felix is generally a background presence, focusing on his duties rather than forming deep bonds with newer members like the protagonists. His key relationship remains exclusively with Demetrio, and his actions throughout the story are almost entirely motivated by a desire to serve his leader and advance the goals of the Ignauts. There is little evidence to suggest significant personal development or a change in his worldview over the course of the narrative, as his character is largely static and anchored to his foundational relationship with Demetrio. His notable abilities are grounded in his physical prowess and combat skills, making him a formidable soldier and a loyal guardian for those he fights beside.