He did the AI for Black & White? My respect for him has just increased by an order of magnitude. Black & White's creature AI was nothing short of amazing.
My second-hand impression is that Richard Evans is responsible for most of what actually shipped in the game's creature AI. As the Wikipedia article says, Demis only briefly held the title of Lead AI Programmer on the project.
That's a nice c.v., but he definitely wrote his own wikipedia article.
I'm usually skeptical of these kinds of vanity articles (and seeing many more lately), but this one kind of checks out [1]. It's got edits by many different IP addresses and handles stretching across nine years.