MIST Troopers, also known as Mobile Infantry Stealth Technology Troopers, are a specialist type of trooper within the United Citizens Federation.
These stealth infiltrators make use of suits with cloaking capabilities. This allows them to sneak deep into enemy territory and secure a position where they can make use of their sniper rifes to take out the leadership caste amongst the Arachnid swarms. Through the use of lethal Nightshade Rounds, a MIST Trooper can eliminate an Arachnid target with a single shot.
When their suits are activated, the MIST troopers become invisible to detection. Once ready, they are capable of taking out their Morita sniper rifles in order to enter their sniper mode.