Man these outfits are stunning, and the rendering π€©π
I would love to give you feedback, but it's kinda hard because these look like they are different characters, not so much iterations of one single character... you know what I mean? xD
The right one looks asian and noble, the 4th one more Caucasian and rougher (bc of spiky hairs), the first two look old, while the others look younger and they all have different weapons (gauntlets, sword, axe,...).
So maybe it would be easier if the hook of the character is a bit more specific than "strong and reliable".
Maybe something likeeee π€ ...
"A strong and reliable monk hunter from the mountains", or
"A noble guard of Queen Suiko, who is proud of his strength and reliability".
These are just random ideas of course, but they give a bit more background to build the character design around ^^
I hope that helped and I'm curious what you make of it π