I don't mean this glibly, but just in case you aren't playing devil's advocate: you sound like an asshole, and I would not hire someone who made a comment like this one. ($0.02 and all.)
Come on guys.
* You look for lack of empathy in the candidate because that's the sure sign of a person that will break your culture eventually
Does that really sound like an asshole? Someone who uses empathy to determine if people would work together well? Assholes generally don't use empathy.
Sometimes there are teams where there is a key player that runs the show, and the team would be lost without. That doesn't mean they do all the work or take all the credit. What I would be asking is how they were a key player, what made them important, what they did to emphasize the success of their teams, etc. This will quickly make them show their true colors.