The RX-139 Hambrabi is a prototype transformable mobile suit introduced in the Mobile Suit Zeta Gundam anime series. It is piloted by the Titans' Yazan Team.
One of the most visibly unique features were the five mono-eye sensors placed all over its body, enabling the pilot to more easily locate and track targets in both mobile suit and mobile armor modes. Although its generator and thruster output were nothing special, the Hambrabi could engage in high-speed combat for a longer period due to more efficient combustion of its propellant. It was also very maneuverable, and one of the few transforming mobile suits to retain its close combat capabilities even in mobile armor mode, allowing it to use its handheld weapons and forearm-mounted claws regardless of its form.