He can either communicate telepathically, while inside you, or crawl out of your mouth (it's a bit of a squeeze for him) and talk to you normally. He's generally nice, but if he's messed with, his rage is terrifying. Fortunately, he's quite patient. He has the ability to liquefy himself to better integrate into someone's body, can make his body different materials, and can create objects with those materials (ex. when made out of gold, can spit golf coins), though he heats up a ton during this.