Mario is a sleazy sexual predator who
 

takes any opportunity to touch up the other housemates and make suggestive sexual overtones to satisfy his obsession for one of the guys to make out with him.
He reminds me of the ridiculous creepy Shree who wouldn't stop pursuing Noreen.
Cringeable!!
He tries to come across as Mr Nice guy who wants to comfort any housemate having a difficult time but invariably uses those situations just as an excuse for him to have a sneeky grope.