RWBY (pronounced "Ruby") is an American anime-styled animated web series and media franchise created by Monty Oum for Rooster Teeth. It is set in the fictional world of Remnant, where young people train to become warriors (called "Huntsmen" and "Huntresses") to protect their world from monsters called Grimm. The name RWBY is derived from the four main characters' forenames: Ruby, Weiss, Blake and Yang, as well as their associated theme colors; Red, White, Black and Yellow, and their combined team name: Team RWBY.
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 elder half-sister, Yang Xiao Long.
However, following the Fall of Beacon, Ruby travels to Haven Academy as a member of Team RNJR with the remaining members of Team JNPR. After the Battle of Haven, Team RWBY is reunited again and they continue to participate in the war against Salem and her forces.
Following a battle with Neopolitan in the Central Location, Ruby was dropped into the void by Cinder Fall, and ended up in what appears to be a beach-like dimension.
Yang Xiao Long is one of the protagonists of RWBY. She is a Huntress, having been trained at the now-defunct Beacon Academy. Her weapon of choice are a pair of Dual Ranged Shot Gauntlets, Ember Celica.
She made her first appearance in the "Yellow" Trailer, searching for clues regarding the whereabouts of her mother, Raven Branwen, who left her when she was a child. From Volume 1, Yang became a member of Team RWBY alongside Weiss Schnee, Blake Belladonna and her younger half-sister Ruby Rose.
In "Worthy", Yang takes a hit meant for her sister from Neopolitan in the Central Location, falling into the void as a result.