Yes. you can do whatever you want with your character. All the reviewer can do is accept or reject your character base on the guidelines. As well as the reviewer's discression. Its up to you to make the changes accordingly you can go back to the character whenever.
But generally if you fallow the guidelines your bound to be Aokay for the most part. Just remember to add a triva section explaining stuff like their name and how it relates to a color in a way. I speak from experince of having forgetten that.
Alright, one last question. For one of my character's backstories, his parents are the owners of a company that does buisness with the Schnee Dust Company, and they want him to be a suitor for Weiss so he can marry into the company, despite the fact that he and Weiss have never met and the Schnees know nothing about their plans. Would this be considered a too much of a connection with the main characters?
Owning a dust Company is fine. But that level of interaction isn't cause well. If that were the case there be alot of OCs after Wiess's heart to get to that money. A good idea for maybe some other chacter of yours. It can still work just replace wiess with another OC. An well then you got the making of a romeo and juitlet esc story. A old one but a good one none the less. ^-^.
But that is just my thoughts but that does go against interaction as that sounds like something major. Minor interaction is fine like bumping into them or something but something like that is a no.
Edit: I'm not a reviewer but i've check out the rules and that what it sounds like to me. I mean you can try it and see what happens. But worst comes to worst you can always try it with changing some stuff around.
Again i'm no reviwer so your guess is as good as mine. Apart me wants to say yeah but another wants to say no. The Fandom likes to stay within cannon and believeablity. An well Wiess's dad isn't the type of guy to not know that kind of detail. Let alone not be in on it or something.
Edit: Cause image is everything to him. After all he married into the schnee name not the other way around.
Totally up to you man. Though if i was you i'd rewrite it does sound like a really great backstory one that could stand on its own. No schnees in need. I'm kind envyious i didn't think of it. X3 But i digress if you have anymore issues you can send me a message or go on discord and chat with folks there. Never hurts to talk with others.
An well I look forward to RPing with you and your character. ^-^ I mean if you want to RP. Rp if you didn't know means Role Playing. I know your new to rwby just didn't know if your new to RPing in general. Just figure i let you know.
Yup anytime man. ^-^ Also i like your profile picture. Well i wish you the best of luck in your OC making..oh what is their name? I want to be on the look out. Cause who knows maybe they can become my oc's rival some day.
(Throwing in two cents, because I stalk the wiki feed constantly...)
Hi, welcome to le fanon first off! Just as Jack said, owning a Dust company is perfectly fine as lots of OC's have families in that businiess; they just aren't above or on the same level as the Schnee Dust Co. as it would interfere with what we know in canon.
I wanna say that you could in theory have a backstory where your OC's father wants Jet to marry Weiss; however, the two of them cannot be engaged (once again, due to interfering with canon). As an alternative too, you can create a similar OC to take her position as Jack suggested, so you don't have to do a bunch of revision.
When it comes to canon/fanon interaction, best thing to do is to keep it limited. Ozpin may personally scout you out for Beacon if your skills are impressive, but you cannot be his son/nephew/favorite student. Your OC can fight against Pyrrha in a previous regional tournament and lose to her (because she's had a record of being undefeated), but it will not make them best friends/rivals afterwards. Reason for this other than not lining up with facts from the show, is so you aren't latching onto an existing character and building their personality around said character; its not very creative to say the least.
Anywho, if you have any questions ask me also, take a look at some characters in the Accepted category if you need some examples, and look at some of the rules and guides users have put together on the wiki. :)