The MSA-005 Methuss is a mobile suit introduced in the anime Mobile Suit Zeta Gundam.

The Methuss was the first true transformable mobile suit produced by Anaheim Electronics for the AEUG under their "Project Zeta". It served as a testbed for the transformation structure and the gathered data was later used in the development of MSZ-006 Zeta Gundam and the MSZ-008 ZII. Like the Zeta Gundam, the Methuss was very fast and agile in mobile armor mode. However as a prototype unit, it was only armed with two arm beam guns and six beam sabers. During combat, the Methuss can also serve as a support machine, acting as a second power generator for the upgraded Mega Bazooka Launcher.