@Sasaki Kojirō man, Saturn is quite demonic. As the other Gorosei should be. Makes you wonder what kind of a freak Kaido is, as they were hesitant of angering him. The top of the WG is full of horrific creatures, and Kaido is said to be the strongest creature that ever lived.
It's a lot for me to process right now. I just saw the photos, and Luffy defeating Kizaru with just one punch is the least of it. Is that really Saturn? He looks demonic, with horns, possibly an awakened fruit, and those black lightning bolts in the chapter suggested Conqueror's Haki. He seems like a top-tier fighter, which explains why the Gorosei were so composed when Sakazuki Akainu angrily stormed into their room, and the God of Justice told him to shut up, stating that his credibility was below zero...
On the other hand, Kaido is someone they respect, just like Shanks. The Gorosei are afraid of provoking Kaido's wrath and interfering with his battles. Kaido is a demon (Oni) who ate a mythical Devil Fruit, possibly the first or second strongest mythical Devil Fruit in the series, and he has a maximum of three types of Haki. He was about to begin his plan for world domination, collecting the world's greatest powers, enslaving the old, children, and women to produce more weapons, obtaining the One Piece, creating an empire that pirates from all over the world would call a paradise on Earth, and he also wanted to create the world's largest and strongest army. I would be afraid of a guy like that too, especially since he even killed the protagonist.