The ST-09 Rumble Monkey is a Mobile Frame in the Solar Calendar setting.
The ST-09 "Rumble Monkey" is the preferred mobile frame of the Terran Expeditionary Marines (TEM).
The Rumble Monkey's design is based on the same ST-03 standard used as the basis of most modern Solar Union military frames.
A LDD model of the ST-09 Rumble Monkey
The ST-09M "Null Monkey" variant outfitted for 0G environments
Main Source: Mobile Frame Zero: Rapid Attack Rulebook
- ↑ http://www.mobileframehangar.com/viewtopic.php?f=9&t=3676