-List off a few characters (doesn't have to everyone) and what Ethnicity/Nationality they represent. Details are optional.

Since I only have for PCA members at the moment...

Team SHIELD
-Chuck Stein: New Yorker (the neurotic, George Castanza type)
-Sid McCallaghan: Californian
-Ashley McCallaghan: Californian, with a bit of Valley Girl mixed in
-Casper Cruz: Standard American peppered with Cuban undertones

Independent
-Nemo Ferriday: Bostonian, VERY heavy