Talk:Warframes/@comment-103.16.98.66-20150803044042/@comment-72.230.98.82-20150810182551

There is a physical body inside the Warframe. Read the codex entries for the prime warframes, particularly that of Rhino Prime. The Tenno are beings, assumed humans, who were sent into the void and changed by their exposure. The Warframes are suits of armor worn by tenno that protect them and help them to channel the powers they gained from their exposure to the void.

The most logical theories are that we are the 'operator' controlling the tenno. Or, in my opinion, the more likely option is that switching warframes is just a game mechanic.