Zenon, Beet's older brother, entrusted Beet to Poala's parents to secure a peaceful childhood shielded from Vandel Busting perils. As commander of the Zenon Warriors—renowned as the continent's strongest Vandel Busters—Zenon wielded the Excellion Blade, a Saiga forged from Divine Power of Light. This weapon manipulated gravity to augment his speed and leaping prowess, functioning flawlessly under crushing gravitational forces.

Zenon harbored a forbidden power reserve: channeling Divine Power of Light to envelop his body, exponentially amplifying his melee strikes while consuming his existence. King Gransista ordered this technique sealed for its peril, akin to Milfa's lightning-envelopment. Defying the edict, Zenon activated it against Beltorze, the King of Tragedy, by shifting a key-shaped tattoo from his arm to his chest—the Saiga's origin point. He theorized this sacrifice might evolve the Excellion Blade.

When Beet’s interference distracted the Zenon Warriors during the Beltorze clash, the team suffered near-fatal wounds. To save Beet, the warriors infused their life force into their Saiga, bequeathing them to him. Zenon disclosed his kinship to Beet before the disarmed warriors launched a final assault on Beltorze. Post-battle, Zenon vanished. Cruss recounted his use of "power beyond Saiga" hurling him into a dimensional rift.

Zenon recognized Beet’s peculiar cycle—three days awake followed by a day comatose—speculating it signaled latent strength. He willed the Excellion Blade to Beet, embodying his legacy and the weight of the Vandel conflict. Beet’s difficulties mastering techniques like the "Zenon Windzard" highlighted their skill disparity. Driven by Zenon’s unrealized mission to end the Dark Century, Beet shoulders his brother’s purpose. Zenon’s disappearance and the unresolved Beltorze confrontation remain pivotal to the war’s trajectory.