Once a criminal from the mean streets of Zaun ,Vi is a hotheaded, impulsive, and fearsome woman with only a very loose respect for authority figures. Growing up all but alone, Vi developed finely honed survival instincts as well as a wickedly abrasive sense of humor. Now working with the Wardens to keep the peace in Piltover , she wields mighty hextech gauntlets gauntlets that can punch through walls—and suspects—with equal ease.

reference- https://www.youtube.com/watch?v=zakgn_-BgDw