Now of course this is an X reader thing so heres the basic keys

(Y/N) = Your Name

(F/N) (L/N) = First Name Last Name

(N/N) = Nickname 

(F/C) = Favorite Color (sometimes there might be a number included it just mean your other favorite color)

(F/A) = Favorite Animal

(O/C) = Outfit of Choice

(E/C) = Eye Color)

(H/C), (H/L) = Hair Color, Hair Lenght 

(A/C) = Aura Color 

(F/F) = Favorite Flower

(S/T) = Skin Tone

Also when it comes to things taking place in the RWBY universe, usually you get to pick the semblance you want...you still can but I will be giving the reader a semblance i made for one of my RWBY OCs.

Semblance name: Puppeteer

Summary: Using her aura (Y/N) is able to emit threads from her fingers to connect to a person, with the fingers' movements controlling their actions.

How its used: (Y/N) semblance gives her the ability to create strings/threads from her aura, the strings can be used for multiple purposes such as
¤Binding
¤Moving/Lifting objects
¤Swinging
¤Setting traps
¤Stitching (although she hasn't perfected it).

And lastly which is her most used purpose for this semblance, and the name origin is being able to control the movements of a person as if they were a puppet.

Limitations: due to the high aura level it's hard to break or cut the threads with just a regular blade or weapon, while still being attached to (Y/N) the strings are durable until she releases them from her fingers the strength weakens.

Also while performing the puppet part of her semblance (Y/N) tends to keep distance and stay hidden due to be vulnerable and open to being attacked.

Over the years (Y/N) trained herself into being able to control a person with only a single thread from one finger, the only people she tends to control is a person who either hasn't unlocked their aura or has a very low aura. Granted (Y/N) can attach a string to a person with full aura, but it'll take more away from her