IMO
Powertech - Body Type 3
Merc - Body Type 2
I named my Powertech Brock and off course he had to be body type 3, though I was pissed there wasn't a blond mullet choice for hairstyle, so I went the short military mohawk with the bad *** face tattoo that wraps around your head.
My bro plays a Merc and went Cyborg Body Type 2 with the eye piece and a scar across that eye to make it look like something clawed that eye out.
Both look "right".
Nothing beat my Juggernaut though, named him Bane, body type 3 cyborg. Being bald, with dark side corruption and face respirator makes him look like Bane from Batman!