Impalers of the Clannic Shelf The Impalers of the Clannic Shelf are a race featured in Tomy's version of Crossbows and Catapults. They inhabit a floating rock island 500m above the surface of Otherworld. The Impalers live in the Bludforests of the Clannic Shelf. The Impalers commonly drop their victims off the Shelf onto sharp objects or passers-by on the surface. They are the fierce enemies of the Doomlords of Gulch