Biting dogs.
I think the problem is the master syndrome. If Hafpor Bjornsson came to challenge a living Cus DAmato everyone would laugh & think he is an idiot.
The coach being considered the untouchable guru is just fiction
If a giant came to challenge me who stands at about 10 feet then i would be awe but be still happy to get into a ring for the fun of it. I have sparred with someone who was 145kg and he wasn't that hard to handle except when he got angry. I guess i like being the bitey dog.