Ok I'm in this seems like fun!
(Working my way left to right)
1. Easily startled, nervous, closed but I'm also getting a kind of determined, hard-working, heart of gold vibe for some reason but I like the expression on this one
2. The grin is giving very determined and kind of playful and even kind of adventurous?
3. Friendly and casual and also seems relaxed and cool-headed
4. Defintely some kind of wealthy, but also seems nice and sociable
5. Stalward and reliable and also very friendly
6. Defintely not as friendly as the others, reserved and quiet, but not necessarily evil just... off-putting lol
7. Kind, Very open, and reliable, but also pretty dumb
I hope I was kind of close lol
Other than that I don't have much to critique. The expressions are really good! Maybe you could do some more with eyebrows and eye shape, and I like the different perspective of the first guy and think some of the others could benefit from more unique/interesting poses to add even more character.
As far as the art itself goes maybe it could benefit from a combination of more shading and reducing the palatte of each character to only a few different colors, each with their own highlight and shadow colors, but this could also be more of a personal preference since I think they already look good now, especially given their bright, cartoony styles and colors.
I like the dissonance between the fantasy characters and the the ones in more modern clothes and am definetly iterested to learn more about your setting!
Anyways, maybe this helps? Either way good luck with the project!