Qrow Branwen

Qrow (pronounced "Crow") is a currently unseen character in RWBY, and Ruby Rose's "dusty old" uncle. He is a teacher at Signal Academy, which has yet to be seen. He was mentioned in the first episode as being the one who taught Ruby how to fight and wield her High-Caliber Sniper-Scythe, Crescent Rose.

Ozpin revealed their acquaintance when he deduced Qrow was the source of Ruby's talent with such an uncommon weapon, as he knows of no other scythe-wielders of comparable skill. At the end of Black and White, Ozpin, while viewing footage of the aftermath of the battle, receives a cryptic message from Qrow: "Queen has pawns". James Ironwood also apparently knows and has been in contact with Qrow.

It is revealed in Burning the Candle that Qrow was on a team with Ruby and Yang Xiao Long's father, Summer Rose, and Yang's mother.

Abilities
It is mentioned that Qrow is a master scythe wielder, having taught Ruby how to use her scythe. It remains unclear if his scythe is the same, or if there are differences between the two weapons. In Yang's flashback he was shown easily dispatching three Beowolves singlehanded.

Trivia

 * The mumbling of the phrase "That's my uncle!" by Ruby is a reference to the Rooster Teeth Animated Adventure Left 4 Trek.
 * When Qrow messaged Ozpin, below his name was a blanked-out Team label. It is unknown if this was censored by Qrow, but it may indicate that Qrow is still part of a team.
 * The scythe-wielder's intentions remain unknown, asides from the apparent conspiracy between him and Ozpin during the last episode prior to the ending credits of Volume 1. To which end their plans lead is unclear- and of whom "The Queen" refers to, possibly Cinder Fall as seen in the end of Dance Dance Infiltration.
 * Qrow was first seen in Burning the Candle, but not in full 3-D rendering model.