I don't mind original takes but try to get as close to Brandon Rogers as possible.

Focused on his company's success, Blitzo prides himself as being business-like and professional, but in truth, he has a shortsighted ego that makes him terrible at managing a legitimate business. Despite his status as his company's superior, he comes off often as immature, self-absorbent, and even disrespectful among his employees; to which none of them find him serious enough as their boss and often come to question his extravagant yet poor decision-making. On the assassin side, he is murder-savvy and borderline sadistic with his victims. He is perfectly fine with committing more brutal killings (e.g. on children) if there's no fuss over it. He was also not above sleeping with Stolas, who is a married man, in order to have access to his grimoire, which is the key element allowing him and his employees to fulfill contracts to assassinate people on Earth.