Protoframe
A Warframe-linked human transformed by Albrecht's Helminth serum in 1999, keeping their face and individual mind.
1999 · HUMANFULL SPOILERS
How they differ from Warframes
Where full war bodies show no face and no ordinary human life, a Protoframe is on stage as a person. The long-term safety of the transformation remains unclear.
The temporal paradox
Because Albrecht carried future Warframe knowledge into the past, the word 'proto' does not mean a simple linear first model. A design from the future takes human shape in the past.
Gemini
The Gemini Skin lets a player switch between Warframe and Protoframe appearances. A cosmetic presentation and the historical person themselves are not the same concept.