TV-Series
Description
Zuhl serves as a major antagonist within the Boazanian Empire's forces invading Earth. Physically, he is depicted as a one-horned, hunchbacked, and toothless scientist with blue skin in the original anime, though his live-action adaptation features dark brown skin. Emperor Zu Zambajil dispatches him alongside Duke Zaki to Earth under the pretense of aiding Prince Heinel (renamed Zardoz in the live-action series) but with secret orders to eliminate the prince if he threatens the emperor's rule.

Zuhl operates through cunning, contempt, and overconfidence. He consistently conspires against Heinel/Zardoz while boasting about his inventions' capabilities against Voltes V, which notoriously fail in battle. His treachery includes engineering multiple beast fighters, capturing Professor Kentaro Goh (Dr. Ned Armstrong) for exploitation in schemes, and collaborating with Zaki to leak weaknesses in a beast fighter intended for Heinel's use—a plot foiled when Heinel's aide, Katherine (Zandra in live-action), discovers and reports it.

His assassination attempts escalate, involving surveillance through secret passages and an attempt to stab Heinel in his quarters, only to be outmaneuvered by a decoy. Later, feigning defection, Zuhl lures the Voltes team into a trap rigged with hidden bombs by Heinel. When this fails, he falsely directs them to a Boazanian base, triggering an ambush. After a final, failed knife attack on Heinel during the confrontation, Zuhl is executed by Boazanian guards. Posthumously, Heinel orders all portraits, belongings, and memories of Zuhl eradicated for treason.

In *Voltes V: Legacy*, Zuhl retains his role as a mole for Zambojil against Zardoz. Key differences include his closer friendship with Zandra and his death scene: after a failed assassination, Zardoz offers him redemption via suicide with a dagger; Zuhl attempts to attack Zardoz and is stabbed instead.

Zuhl's relationships center on betrayal. He feigns loyalty to Heinel/Zardoz while secretly plotting his overthrow. He competes with Draco (Jangal in the original) for favor and technological supremacy, though both share mutual disdain. His interactions with Katherine/Zandra shift between adaptations—originally indifferent colleagues, they are portrayed as confidants in the live-action version before his betrayal is exposed.