Publishing super-agent Andrew Wylie (AKA the Jackal) on the (totally creepy) keys to success:

"I would say that I have an aspect of my personality which is that I have no personality. That's why I work as an agent. I have the assumed personality of the people I represent. I am like a sponge. When I came here and was working with Gillon Aitken, I had a certain kind of handwriting. After a couple of years, my wife looked at my signature and said, 'What's that?' I said, it's my signature. She said, 'That's not your signature.' And it had changed. I'd taken over his signature."
Agent Provocateur [Guardian]