Vader is a Polish death metal band from Olsztyn. Formed in 1983, the group was founded by then-bassist Piotr "Peter" Wiwczarek and guitarist Zbigniew "Vika" Wróblewski. Vader went through several lineup changes over the years, and since 2011 comprises Wiwczarek on guitars and vocals, guitarist Marek "Spider" Pajak, bassist Tomasz "Hal" Halicki, and British drummer James Stewart.