I'd stray away from using the term super soldier. The connotation with it is something akin to Captain America, a physically enhanced human.
The experiments were meant to show how to understand and manipulate human behavior on a psychological and ideological level.
Using the term 'super soldier' might lead peeps to misunderstand the grounded horror of what actually happened to Johan.
The way Johan manipulates people is that he finds the cracks that are already there, and using his immense and deep understanding of human nature manipulates them to his desired outcome. Johan presents the twisted truth to push the peeps over the edge. He appears to those victims as a saviour. Allows them the illusion that they are making their own choices and not abiding his will.
In the above post I elaborated on how Johan manipulates those people
https://worstgen.alwaysdata.net/for...t-round-2-bracket-3.68115/page-3#post-6111609