The Hikui Bird (also known as Fire-Eater) is a Dragon Ball anime filler animal, and one of the few Dragon Ball anime filler characters known to have been designed by Akira Toriyama himself. It is a rare and near extinct bird that dwells in Mount Kiwi's volcano and that eats flames.
Goku and Chi-Chi find a book written by Master Roshi where he claimed that Hikui bird's feathers must be collected in order to create the Bansho Fan, but he later admits that he only wrote that to impress the girls. Without knowing the truth, Goku and Chi-Chi went to Mount Kiwi searching for the bird's feathers to create the legendary Bansho Fan and put out the flames at Fire Mountain to save the Ox-King.
When the last Hikui bird alive appeared, he broke his own egg's shell to help the cub hatch. After that, both the adult and the cub stared at Goku, Chi-Chi and the old scientist for a few seconds (probably as their own way of thanking them for taking care of the egg) before leaving the volcano and disappearing in the sky. The adult Hikui bird left some feathers behind, but they just disappeared when Goku and Chi-Chi tried to catch them.
Emperor Pilaf also knew about the Hikui bird and went to Mount Kiwi intending to steal the egg and later sell it for a lot of money, but Goku stopped Pilaf's evil plans and he, Shu and Mai had to run away once again.
- Physically, the Hikui Bird looks like a huge ostrich, even though he can fly while ostriches are flightless birds. He also looks a lot like the cassowary, another flightless bird that, just like the Hikui, has a large bony projection on top of its head.