Ōnyūdō

Ōnyūdō — "big monk" — is the parent class for an entire family of Japanese giants.

A towering figure, or just a shadow, met at night. The size range in the record runs from two metres to "as large as mountains."

Under this umbrella sit the monk who grows taller the more you look up, the bald giant that rises beside a ship at sea, the blue one in the fields, and a country's worth of regional giants whose only shared traits are a bald silhouette and the wrongness of the scale.

Which raises the question

Why a monk?

Japan had plenty of other silhouettes available. Warriors. Farmers. Merchants. Court officials. Any of them would read at a distance.

But when something unidentified and enormous appears on a road at night, the Japanese imagination reaches, almost without exception, for a shaven-headed man in robes.

Here's the best answer I've found, and I think it's right.

The renunciant was the one figure in Japanese society licensed to appear anywhere, belong nowhere, and be obeyed.

A monk could turn up in your village without explanation and it wasn't strange. He had no local ties and owed no local loyalties. He might be a saint, a beggar, a scholar, or a fraud, and you would not be able to tell. And whatever he was, you were expected to treat him with respect before you'd established which.

That's an extraordinarily useful uniform for the unknown.

The monk-shape is Japan's default costume for a thing that has authority you can't verify.

The regional file

Hokkaido, around Lake Shikotsu, in the Kaei era: anyone stared at by its large eyes would faint, "as if their ki had been disturbed."

Note the reversal. In this tradition, looking is nearly always the victim's mistake — avert your eyes, don't look up, don't meet the gaze. Here the giant does the looking, and being looked at is the injury.

Tokyo, 1937. Military couriers were attacked by a specimen in soldier form — read at the time as the ghost of a conscript who had killed himself.

An eight-hundred-year-old apparition format, hosting a modern grief, in a militarizing city, four years before the Pacific war.

Tokushima has my favourite one. A benevolent giant, eight and a half metres tall, who came at night and hulled the rice left in the water wheels.

Free labour. Enormous, unasked, and helpful.

But anyone who watched him work was endangered.

Which is the tradition's most consistent law holding even here: the gaze taboo applies to the helpful ones too. He'll do your work. You must not see him doing it. The rule is not about danger, it's about category — and watching puts you in the wrong one.

And then people dug them up

The unmaskings are the best part of the file.

A giant haunting a temple in Iwate was traced to an old weasel's nest.

And a groaning-rock giant on Date Masamune's land was investigated by digging — and underneath they found an otter the size of a calf.

Which is a magnificent sentence, and also a reminder of how this tradition's attribution engine works. Whenever a giant is explained, the explanation is almost always a shapeshifting animal, and the animal is nearly always a weasel, a fox, a tanuki, or an otter.

The otter, incidentally, is now extinct in Japan.

It's still walking

Kuwana, in Mie, has a festival float: an enormous mechanical ōnyūdō, a karakuri automaton, whose neck extends as it processes through the streets — the head rising up above the crowd, exactly as the road-giants were said to do.

Built to be looked at. Paraded annually.

The one giant in Japan you're allowed to watch.