This article is about the Quirk used by the Serpenters. For the villain from Two Heroes, see Swordkil.
Sword Kill (ソード・キル, Sōdo Kiru?) is the Quirk used by the Serpenters brothers.
Sword Kill allows the user to create flexible swords from their arms and shoulders, that fold in and out like an accordion.
When their Quirk is boosted by Trigger, the Serpenters can produce up to six swords, including from their mouths, and their faces become more sinister and snake-like.