Joining the Zodiac Cartel, Gustav adopted the codename Libra, and served as a terrorist. The Zodiac was infiltrated by Nick Fury, posing as Scorpio; the Zodiac fought the Avengers and escaped. Led by Taurus, the Zodiac later attempted to kill all Manhattan residents born under the sign of Gemini as a show of power, but were thwarted by the Avengers. Taurus's faction attempted to kill the Zodiac dissident faction, but all twelve leaders were captured by the Avengers. Battling the Avengers on several occasions, he eventually discovered that Mantis was the daughter he had left in Pama, and turned himself in to the authorities. He then vanished mysteriously, later turning up in Ho Chi Minh City, where the Swordsman revealed to everyone Mantis' transformation into the Celestial Madonna. Libra then witnessed the marriage of Mantis and the Swordsman, and returned to prison shortly after. He did not stay in prison long, though, as he escaped and committed illegal acts alongside the Zodiac once more. A new android version of the Zodiac later appeared, led by Scorpio in a new android body, massacred the human Zodiac, and took over their criminal operations.