Talk:Squall Frost Helmet/@comment-186.54.225.113-20130820163206/@comment-71.172.27.240-20130830002835

Tenno are a specific branch from human civilization, just like the corpus and grineer. Hayden Tenno was actually the first Tenno, as confirmed in Livestream 10. And if you looked closely inside the cryopods during the defense mission, you'll notice a blue skinned, humanoid figure resting inside of it. And the hostages from rescure missions are also Tenno, just without their Warframe exoskeletons.