Ruby Rose is the main protagonist of RWBY. She is a Huntress, having been trained at the now-defunct Beacon Academy. Ruby's weapon of choice is her High-Caliber Sniper-Scythe known as Crescent Rose, which she designed herself.
Ruby first appeared in the "Red" Trailer, visiting the grave of her mother, Summer Rose. After an invitation from Professor Ozpin following a short battle with Roman Torchwick, Ruby attends Beacon Academy in order to become a Huntress. During her time at Beacon, Ruby became a member and the leader of Team RWBY, consisting of herself, Weiss Schnee, Blake Belladonna, and her own older half-sister, Yang Xiao Long.