MMA has some really scary-looking dudes.
Before a fight, you have to stand across the cage, looking at a guy who wants to rip your head off.
Some fighters don't have a great staredown, and generally aren't all that terrifying.
But then there are others, whose simple stare can send shivers down the spine of the most intense and focused of fighters.
These fighters are big, scary, brutal, and have killer instinct.
Every list is subjective, but here, as far as I'm concerned, are the top 10 scariest fighters in mixed martial arts today.