Cosmo is a solid Muay Thai guy, Brazilian champion I believe. Fought in Holland one time (that I have seen) went to a close decision against Sem Braan. Fought Shane Chapman to a draw which is pretty good. Good guy for Dida to work with for the fight against Buakaw if Cosmo works his kicks more in sparring.
He can get a little wild with his strikes but lets face it, most brazilians do.