Talk:The Gradivus Dilemma/@comment-85.230.94.42-20131029075245/@comment-188.111.109.9-20131029122010

Wiki says:

"Warframes are the name of the exoskeletons used in the Warframe universe. They protect the wearer with regenerating shields while allowing him or her to use special abilities such as faster movement speed, higher jumping heights or control over elemental forces. "

So they are actually suits or exosceletal armor worn by humans. As OPs statet the humans in the Warframe suits were altered by the Orokin through the technocyte virus which allows them to use the warframe armor.