'Hawkins rode Yamato', bruh don't do my girl dirty like that, Yamato isn't that desperate.
But going back on topic, I guess it can't be helped. A white tiger will have to do. In a way, a tiger in eastern mythology are also considered 'king of the beasts', so I guess it makes sense.
Along with Kaido's dragon, a white tiger is also one of the 4 symbols in the ancient Chinese constellation, so i guess its pretty fitting.
White Tiger (mythology) - Wikipedia
We also have Marco the phoenix, all that's missing is the black tortoise.