Deny is the leader of a duo comprised of Safari and Stripe, serving as a primary antagonist in the story. He is part of a group that persistently pursues a girl named Call, eventually positioning his team to launch an attack on Beck and his companions. His role in the narrative is defined by this determined chase, as he and his subordinates are described as stubbornly following their target.

In relation to the protagonist, Deny possesses a specific awareness of Beck. He knows Beck by his epithet Red Ash and has gathered enough knowledge about his adversary's abilities to effectively counter them. Interestingly, this familiarity is not mutual; while Deny is well-informed about Beck, there is no indication that Beck has any prior knowledge of who Deny is. This dynamic differs from the original story concept, where the two were envisioned as former partners who had a falling out, but in the final version, the connection is one-sided.

As the leader of Safari and Stripe, Deny commands a small but determined faction that serves as the main opposition force against the central characters. The story does not provide extensive details about his background, personal motivations beyond the pursuit of Call, or his individual capabilities compared to his subordinates. His development is not elaborated upon within the known information, and his character primarily functions as an obstacle for Beck and his friends to overcome. The limited information available about Deny reflects the short length of the anime, in which he appears as an antagonist without extensive exploration of his personality or history.