Doctor Hercule MirriotteExcellent character idea. I'd rather you limited Intellect to 5 - plus remember that normal humans can't boost toughness directly and so have to do it through defensive roll or equipment and that you're 1 point too high for toughness for PL4 - but other than that, very good idea for this kind of game.
You could, perhaps, give him some experimental substances like drugs and stims he makes himself. I.e. enhanced strength 1 (affects others, side effect: reduced awareness 1) as equipment for a stim/drug. Or Second Chance 4 (piercing/bludgeoning/slashing/fire damage, limited; conditions it helps you resist are delayed by 1 minute instead of actually resisted) for a pain-dampening drug.
Agent Trevor ManningsNice. No mechanical problems with the build. I'd pegged an agent for a gun, not a bow but either works and flavor is up to you.
Samantha CollinsNice pic.

And nice athletic archaeologist build - good backstory too. For your languages, I got a few minor nitpicks. Hebrew is not actually a very ancient language - that would be Aramaic - and hieroglyphics should probably be culture-specific. OTOH, instead of trying to learn lots of different hieroglyphic types, you could have a reference book or even mini-translator as equipment (i.e. put a bonus rank of Languages as a 1-ep equipment). Something that I found unusual is ranks in ranged attack but nothing you could use them with.
Daniel "Diesel" DaviesYou got Great Endurance twice. Also, I'd rather you didn't have both strength and fighting at olympic athlete levels - maybe reduce one of the two by one point and make up the difference with a bit of Unarmed skill? After all, you're supposed to have had some training. Also, Charisma is leadership ability and self-confidence. If you want good looks, maybe a rank in attractive would help?
Dr. Henry Jekyl XIII (if he's still an available submission)
You don't need Power Attack as an advantage - since an attack can't more than double via PA and your unarmed damage can go at most from 1 to 2, the base maneuver has you covered. I like what you've done with Second Chance and your skills though I am not sure it works. Gotta check my books - if it turns out it doesn't, Ultimate Effort would replace it nicely.
I am still waiting for that Bio if you changed your mind about retracting the submission.
Peter PallidNice. Having a company man on the team might come in handy. Wights and Draugar would fit with your "cold undead" vision for the character and definitely fit the auditor flavor - them being tomb guardians of important (and thus buried with their riches) people.
Jessica StarkHeh. The designated blonde of the group has the highest awareness-related skills. Was that reversal intentional BTW? Mechanically, I can see no problem though I'd prefer her vision to be via telescopic lenses rather than her normal eyesight.