Boltoid

Boltoids are sentient bolt enemies found throughout Grunty Industries in Banjo-Tooie, alongside the Nuttas and Washups. They disguise themselves as regular screws and attack once Banjo and Kazooie, being easily defeated by attacks such as the Forward Roll.

Boltoids, Nuttas and Washups are also spit by Weldar during his boss fight, much like the Mucoids in Terry's battle.