[@Duthguy] For your character's rank, its Rookie instead of Apprentice.
For his Appearance, include his height and weight.
Personality-wise, I think you mean Bartholomeo. Unless you meant Kuma though.

I'm nitpicky at times, so I apologize. In your background, you have an extra "r" in Zoro.

Devil Fruit is interesting, but it seems too much like Robin's and sounds like Baby 5's (Buki Buki no Mi or Arms-Arms Fruit). Maybe Joshi Joshi no Mi? Joshi means Upper Extremity. But aside from just getting different types of arms, how else would the Devil Fruit progress? If you just want four arms and three swords, maybe some sort of Fishman? Vanderdecken had 2 pairs of arms, so that's something.

[@GreenGoat] Yeah, things are way clearer now. 
Change race to Human (Cyborg). 
Skills would be Science and Helios Engine (Or some kind of cyborg body stat stating the presence of the Helios Engine and other stuff? I mean, if she has other non-human parts. 
Then the techniques are cool; maybe lose one of the engine abilities of a SCIENCE technique for the robot man. Stacking on to that technique would be for upgrade for the robot dude.
That cool with you?	

EDIT: [@Rai] You might not notice, but here goes nothing. Yeah, possible in the future when you guys power up some more. If Sanji can light his foot on fire while spinning, I don't see why a horned person can't generate dark energy to boost their physical capabilities. Totes not being sarcastic here.