^I wouldn't really call Togami friendly, though. I mean, improved personality or not, he's still as much a pompous asshole as he was in the original.
Though as far as normality goes, I'd say that Koizumi is the most "normal" of the cast after Hinata (apparent feminism aside, anyway). I mean, she even points out herself that most of the people on that island are freaks, doesn't she?
And I also kinda liked how she put her foot down after Kuzuryuu's provocations.....