Some of them look a little cagey or intimidating, but a few of them give off a really friendly, reliable persona like they'd be your best friend in a heartbeat.
Toddy, for example, looks like a really easy-going, reasonable lady:
http://franknoelker.com/sites/franknoelker.com/files/styles/...
...kind of a horrible life story, though, by human standards.
It'd be really interesting to interact with them, and see how far away the personality is from the portrait's impression, when interacting with them in real life.
It's hard not to feel guided by an instinct to judge a book by it's cover, when looking at those faces.
Meanwhile, based on the descriptions with each picture, most of them are horribly depressed and traumatized by experiments or isolation. I can't really conceptualize what a couple of hundred "knockdown" experiments [0] with "punch liver biopsies" might be like.
Sounds unpleasant.