Yes. Can anyone name a nice scientific genius? It's not a coincidence that these rare individuals aren't agreeable, i.e. not unduly influenced by the concerns/ideas of people around them.
Michael Faraday? From the little I've read about him he seemed to be a pretty nice guy.
Einstein!
Richard Feynman?
Hoo boy. I dunno. Of course I have never come close to meeting the man, but the stories make him seem incredibly cocky and willing to verbally slam people just for fun.
A notorious philanderer, it is said, though I guess you may have to be nice to be one of those.
Leonard Susskind who actually worked with Feynman recently said Feynman had ego of the size of mountain.