Berries rot inside Koffckle's hollow body, generating the foul-smelling gases it controls. This gas is highly volatile and may explode at any moment, although the rocky shell will remain undamaged.
A Koffckle hides under rocks, keeping its body concealed inside its shell while eating stored berries. Getting up close to a Koffckle will give you a chance to observe, through its thin skin, the toxic gases swirling inside.
