Brawler designs

Charcter design variations done for a course.
A) The base idea was a Brutish brawler with imposing and agressive look. So I went with spiky armor and buff type build.
B) Tasked to change the proportions and mood while keeping the design similar, hope it worked.
C) I had to change story and setting, so I thought to make it sci-fi oriented with big faceted shapes and glowing weapons.