2, 6, and 7.
Honestly, the thing I most dislike about Dex is how how smokes that cigar or whatever a few cm from V's face.
He's far from being the first to try to kill a PC working for him so that doesn't make a difference to me. Also, his rough language reminds me of Thaler (this is a positive thing).
There's definitely something I don't like about Misty. I'm... not sure what it is, exactly, but she really rubs me the wrong way. I wasn't sure who she was until I started searching that video for her, at which point I was thinking "Oh, right, it's that assistant girl or whatever her role is".
I like Victor even if I, again, am not entirely sure why. Yeah, he knows his job, but there's also something about his personality. And sense of humour (the bit about being old and having a shaky, 'ganic hand).
He seems a lot more trustworthy than any other NPC we've seen (except probably Jackie).