The MS-09 Dom is a mass-production ground combat mobile suit introduced in Mobile Suit Gundam. Its most well known pilots are the Black Tri-Stars.
A heavy mobile suit developed by Zimmad, the MS-09 Dom was a ground combat machine equipped with hovercraft technology. It was fitted with thermonuclear jets and rockets under its feet, allowing it to quickly move across the ground, greatly improving its mobility compared to previous ground-use mobile suits. Thanks to sensors located in front of its feet, it was able to traverse uneven terrain. While in cruising mode, it could hover across the ground using only its thermonuclear jets. The Dom can hover at a maximum speed of 381 km/hr for up to 5 hours.
During the One Year War, the Principality of Zeon's ground-based mobile suits, including the MS-06J Zaku II Ground Type and the MS-07B Gouf, all suffered the problem of low deployment speed. It was determined that the maximum walking speed of a mobile suit could not exceed 200 km per hour. After several failed attempts to solve the problem, Zeon introduced the Dodai YS as a stopgap measure.