Caldari tends to rate the highest while Gallente the lowest. It's not unusual for Federation men to be told they're 'pretty boys' and likely gay while conversation around Caldari often brings up their strong chins and rugged stubble.
JFC, does this annoy me. This is a product of the Homogeneous Internet Culture which is Homophobic, Obsessed with Facial Hair and/or Ron Swanson, and has Overcompensating Views of Masculinity (gotta be as tall and/or as big as possible to be masculine). This is generally combined with a complete misunderstanding of the concept and, as usual on the Internet, failing to consider the idea that masculinity may have subjective definitions (or rather,
does have subjective definitions). I generally roll my eyes at hypermasculine/hyperbadass characters because it appears as insecurity and/or overcompensation on the player's part, as outlined by Makkal in the OP. I lift weights and eat steaks regularly IRL, but I'm kidding myself if that automatically makes me 'manly' or a badass. In fact, I encourage people to take off 10 points for the fact I even mentioned that particular IRL detail. I can say for sure the desire to get bulky and wear tight t-shirts definitely originates from some sort of insecurity on my end, and I am certainly not alone in that.
It's amusing that the "Caldari badass, Gallente gay" paradigm exists when you can easily get a
wide-set jaw ethnic Gallente male character that looks like Jason Statham or some other Hollywood hero. At the same time, I generally consider Civire to look like absolutely ridiculous caricatures, like an entire ethnic group of
David Coulthards or older Dolph Lundgrens. You can't really get much variation amongst them either, so it's almost "Badass Manly Character EZ-Mode". Tangent: In comparison, the ethnic Gallente bloodline really offers a lot of diversity, if you compare that previously linked Gallente portrait to this
absolutely amazing pretty boy by Darveses.
Now that the rant is over...
As just alluded to, if you or your character has to mention how Manly or Badass they are, they're probably not. To me, it's a natural thing that comes across in self-confidence and personality. To emphasize Seriphyn's 'badassness' (or alpha personality as I typically go with), I tend to rely on confident body language and a dominating/controlling personality in social interaction. Driving the conversation, being gregarious, even smiling and being friendly too. Then for body language, even little stuff like leaning forward on one's knees, slouching in a laid-back manner, folding arms, and so on...and that's just "/me folds his arms tightly with pensive frustration, almost hugging himself" not "/me folds his massive, well-honed arms, causing his t-shirt to tighten around his massive frame, muscles bulging from the fabric". Trust me, I've seen the latter, and it makes me roll my eyes. I think we, as readers, are more than capable of imagining how a heavy-set character might look like if he folds his arms.
Sure, Seriphyn is all big and muscular, a trained marine that can rip a man's heart out with a feather (joke), but he and I
never mention it, and I think that's important. A Badass character shouldn't need to tell everyone or remind everyone that they are a Badass character; if it's a natural thing we should be able to see it without a mention! It's like the colour of your skin or your gender.
EDIT: And if we can't see it, doesn't matter! It's an inherently subjective thing that is down to individual perspective; I may not see it, someone else might. But trying to enforce the view among everyone via IC hnghhing so that there is unanimous agreement your character is a badass is a bit silly IMO.