Vine Lestrange
His uncle is Rodolphus Lestrange (who is Bellatrix's husband if someone doesn't know). Raised by pureblood parents and loyal death eaters, He is also one. Currently a 6th year student. His best friends are Nagini, Rosier, Crouch Jr, Amy and Dark.
So far, he killed a mudblood named Jack (Hermia's friend) in Hogsmeade. Took part in muggle huntings with his friends. He was working in Borgin and Burkes.
During the Yule Ball time, he wanted to mock Fox and asked her to the ball. With time, it turned into a 'love story'. This eventually caused him to become a traitor. He refused to kill Fox - but still continued on his duty, he managed to kill a Squib with Crouch Jr, a day before the werewolf attack.
Vine has been planning to fake his death to get attention off him. This will become clear as the role play progresses.