Spoilers Chapter 1020

From TalkOP

- The illusions Robin and Brook see are of people they miss. In Robin's case wee the back of a giant and a white haired woman. But not their faces In Brook's it is many people from his crew from the back, but also unknown people wearing odd armor. No faces again. Brook is unable to attack any of them, but Robin dispels the illusion by attacking her loved ones which in return defeats Black Maria's suboridinates.
- Wanyudo is a Special Dog-type SMILE fruit based on a dog breed you can only find in Wano.
- Caribou is with Momonosuke (and later Luffy too).