Doctor Marino keeps a very professional and gentlemen like demeanor. But, when it comes to Cati, he can lose his seriousness. He lives in the footsteps of his grandfather and aspires to be like him. I imagine him with an almost deep, smooth voice. He is well educated so he may or may not have a british accent but do whatever you see fit. :) If you have other lines from the comic you would like to add, feel free to do so! ;)