Verbal Tic: Speaks with frequent mid-sentence...pauses. Even when they don't make...much sense. Matter of fact, he talks so slowly that in the ending where Leon is saved, mission control begins talking over him before Spectre's done talking.
Mama Bear: to both the team and her own children. She's even called "Wolf Mother". In her backstory, she was married to an abusive husband, and put up with it until he turned his abuse on one of their children, after which she snapped and killed him with her bare hands.
Name's the Same: Through what is almost certainly a complete coincidence, Lupo shares her nickname with a BSAA field agent from Wildstorm's relatively obscure 2008 Resident Evil six-issue limited series.
Punch Clock Villain: Holds no particular loyalty to Umbrella, and only fights for them to support her family.
Action Survivor: You wouldn't know it to look at them, but a lot of their training is in domestic situations (Dee-Ay and to some extent Harley being exempted), and it's unclear just how much field and combat experience Party Girl, Shona, and Tweed have. As a whole, they're a little less hardened than the USS strike team.
For instance, Party Girl is clearly flagging by the end of the campaign and everyone wants to get out of dodge; in-game dialogue will have them fearful and confused at a few points, and they have little to no idea what to do with the zombie apocalypse. That said, the hail of bullets you're likely pumping out renders this trope all but invisible.
Distaff Counterpart: It seems that their sniper, heavy weapons person, and stealth expert are female, and their leader, medic, and scientist are male; this is the opposite for the USS team.
Miles to Go Before I Sleep: Echo Six wants out after finally evacuating Leon, Claire, and Sherry. Unfortunately, Command needs them for further missions and reluctantly orders them to stay behind to continue fighting in Raccoon City.
Crispin Jettingham callsign: DEE-AY
"Working as a team... that's the only way out of here."
The Ace: He's been a soldier so long, he has experience with just about any weapon and the know-how to handle any combat situation.
Injun Country: She grew up alone on a reservation, and learned combat and stealth there before she was ever in the military, which she joined straight out of high-school.
Knife Nut: In the Triple Impact Trailer, she stabs the hell out of a Licker.
Does Not Like Guns: Which started out when she threw aside a presumably perfectly functional assault rifle just to knife the thing to death.
The Perfectionist: Possibly as a result of growing up in harsh conditions, she is always keeping her skills sharp.
Sienna Fowler callsign: PARTY GIRL
"Some party this turned out to be."
Candid Camera Prank: Her specialty in her youth; she apparently threw wild parties for the upper-elite class and sold the footage to the highest bidders (it's unclear whether it was useful intelligence on those tapes or...something else). Regardless, she outsmarted some actual surveillance experts and was recruited afterwards.