I honestly understood that Оrz, is the great-grandfather or relative of Kaido
It's just possible because they have
They have incredible growth.
And I remember that orz was a very strong giant.
And Kaido himself is one of the strongest creatures in the world (canon)
في الواقع أظن أن غارب خسر بضع مرات لكن أمام أقوياء مثل روجر و اللحية البيضاء
Actually I think Garp lost a few times but against strong people like Roger and the White Beard