Zaku I(THNDERBOLT Ver.)

Model Number: MS-05

A predecessor of the Zaku II, the Zaku I is also known as "Old Zaku", and is still in active service despite its inferior performance. The Zaku I used by the Principality of Zeon's Living Dead Division is equipped with sealed joints to protect against debris in the Thunderbolt Sector. Additionally, the mobile suit's backpack features propellant tanks on the sides for improved mobility, as well as a foldable sub-arm that can hold firearms.