They are the howling children of the ancient storm deity RUDRA. They have iron teeth and roar like lions. It is not certain how many there are. Reports range from seven to one hundred and eighty. Bear in mind you have to allow for exaggeration and bluster. And also for people running away.
GodNote: Sorry this Maruts article is a bit short. We have sent our Data Dwarves off to find more nuggets of information. Stay tuned.