Krossbones are semi-common enemies found in Fungi Forest at night and Creepy Castle. Unlike normal Kritters, who attack by biting and punching, Krossbones attack by swinging a bone club that seems to be a part of their body and by doing a short ranged kick. They are able to move very fast. Krossbones can be defeated by simply pummeling them; whenever a Krossbones is hit with an attack, one of their body parts fall off. As evidenced by their body structure (literally just bones), their bones rattle whenever they are hit, which often has many fans stating that this enemy is one of the scariest in Donkey Kong 64.
During the night sequence of Fungi Forest, Krossbones replace Klumps.