Okay, I'm LATE, but overall: 

Du'brak is off the chains, and while a lot of it's fun, particularly the exaggeration of his barbarian nature (HE'LL FUCK YOU UP), I feel there's a doubling-down on his 'Genius Bruiser' status to the point where the exaggeration is impossible to relate with. Like, if he was intended to be gritty, that's a little lost in the fact that's he killed hundreds of people, seemingly with little effort. I guess I'm offset by the fact that a pirate who's indulged in horrific behavior without even an attempt to justify it under good intentions -- essentially, he's a pirate to murder - seems so well-rounded. Yeah, he can't [i]trust[/i] people, and the guy's traumatized, like, poor baby - motherfucker killed the same guy he [i]bought[/i] a weapon from, that's cold. 

To [i]me,[/i] a character doesn't have to be virtuous, but "relatable" in the sense that I understand where they're coming from, and why they're the way they are. So more reflection, less description of how good Du'brak is at what he is. 

At the same time, though, I have to acknowledge the moments of overcompensation nestled throughout. The first line of the appearance section is a perfect example and I love it. Du'brak's personality section might be a little underused, dedicated mainly to how he can FUCK YOU UP, but I think if the rest of the sign-up made more of an effort to delve into his psyche, it would work perfectly - it would reflect an in-character lack of awareness and accountability for his actions. You just wouldn't [i]also[/i] want to be irresponsible with a character like Du'brak. In my experience, the worst characters to roleplay with are the crazy psychopaths that go around fucking up other characters without facing consequence.  

Roselips strikes me as the more internally-believable of the two, up until when she apparently sought out and joined a pirate crew - the way it's portrayed, it seems it was as easy to do as forwarding her resume to the captain!

The biggest issue with her sign-up is I can't imagine anyone treating her like a protagonist because she lacks... self; her life is described without providing insight into her as a person. It seems she's achieved her ambition of being a maritimer, too, so what else would she strive for? And just what is she like, what dynamics would she offer with other characters, other than being no-nonsense with "inappropriate behavior"? 

On little details, I love how she got her pirate name, and the reference to the "woman as bad luck" superstition was a fun one, too.
 
Tough to choose, but I think I'm batting for [b]Lasersquid[/b] in the end because the sign-up itself is written with more personality, and I just think you could do more with Du'brak as a character. Also helps that I'd [i]really[/i] want to see the deeper exploration of how he ticks that I mentioned above.