The Zaku High Mobility Test Type was an experimental mobile suit said to have been created as the result of a top secret collaboration between Zeonic and Zimmad led by the Principality of Zeon military, with the goal of modifying the MS-09 Dom for space combat. Featuring the upper body of a MS-06R series Zaku II and the lower body of what would become the MS-09R Rick Dom, this mobile suit served as the test bed for the Rick Dom's leg-mounted thermonuclear rocket engines. The ease of maintenance and engineering quality of its leg units were said to be superior to the MS-06R-1A Zaku II High Mobility Type's leg units.
Names：
Zaku High Mobility Test Type
（MS-06RD-4）Status： MS of Zeon
Tags： Mobile SuitPrototypePrincipality of Zeon Forces (U.C.)
Development： Rick DomZaku II
Control： Aina Sahalin
World： the World of Mobile Soldiers
Works： Mobile Suit Gundam the 08th MS TeamUniversal Century Series
LeveL： B
The Zaku High Mobility Test Type was an experimental mobile suit said to have been created as the result of a top secret collaboration between Zeonic and Zimmad led by the Principality of Zeon military, with the goal of modifying the MS-09 Dom for space combat. Featuring the upper body of a MS-06R series Zaku II and the lower body of what would become the MS-09R Rick Dom, this mobile suit served as the test bed for the Rick Dom's leg-mounted thermonuclear rocket engines. The ease of maintenance and engineering quality of its leg units were said to be superior to the MS-06R-1A Zaku II High Mobility Type's leg units.