Name: Heuler
Japanese name: ホイラー
Sex: Male
Breed: Unknown

Heuler was one of those guard dogs who should make sure that Kaibutsu didn't escape from a scientific institute. When Kaibutsu escapes anyway, Heuler followed his leader Jerome to do everything they could to stop him.

As they find the monster and stand together for the final fight, Heuler attacks Kaibutsu after his pack mates Robert and Rocker. He runs like lightning and aims at Kaibutsu's main heart vain. He bits hard, but doesn't succeed in destroying the vain.

Kaibutsu graps Heuler, throw him to the ground and kills him.