King Vader reigns as the supreme antagonist across the Bomberman B-Daman Bakugaiden V anime. Commanding the Devilvader Space Pirates, he directs a cadre of villains: the Three Devil Musketeers—Akumanto, Dokudandy, and Gestra—alongside Devil Slinger. His relentless quest targets the powerful Crysmond jewels scattered through time. He delegates their retrieval, primarily to the Three Devil Musketeers, fueling his ambitions for conquest and ultimate power.

As the overarching threat driving the series' conflict, King Vader typically orchestrates events through his subordinates rather than confronting foes directly. His absolute authority manifests through his command of the Devilvader forces and strategic operations against the B-Da Cops. A shocking betrayal occurs when key operative Devil Slinger secures a Crysmond for himself and turns against King Vader. This treachery critically weakens the king's grip, escalating tensions toward the final conflict.

King Vader possesses a demon-like visage, embodying pure evil within the narrative. His direct intervention surges near the saga's end, culminating in a massive offensive launched in episode 44, "King Vader's Attack!" This assault represents the peak of his schemes and triggers the series' climax.