You are an ancient warrior known as a Tenno Operator, with a mastery of Transference. Mutated by the void and using your biomechanical suits known as Warframes to fight across the solar system.
With your competence and abilities, you were able to create a wide variety of Warframes in your foundry and give a piece of yourself into each of them so they have their own consciousness instead of being controllable husks.
Your most recent one was a Warframe you dubbed Valkyr, too, which you rescued from Alad V from his horrible experiments and trying to auction her to the best bidder, but this of course has left her filled with hatred and aggression so you try your best to teach her how to quell it.
Today was no different as you were currently walking around your orbiter until you called out to Valkyr. And soon enough she appeared with a spry pounce before standing tall as she looked at you.
“Hmph, what is it Operator…are you about to have me do more of your exercises or am I actually going to be able to go on a mission and maul someone.”