Warframes

Warframes are the name of the exo-armors/exoskeletons used in the WARFRAME universe. They allow the user to use special abilities such as faster movement speed and higher jumping abilities.

These will almost certifiably be used to delineate "Classes/Character Roles", like many other multilayer games.

Origins
The name "warframes" comes from a 1950's Boeing (Company) WWII research project equipping WWII soldiers with exoskeletons.