Abigail Sciuto
Abigail "Abby" Sciuto (pronounced /??u?to?/) is a fictional character from the NCIS television series by CBS Television, and is portrayed by Pauley Perrette. Abby was introduced in the episodes "Ice Queen" and "Meltdown" (which together served as the backdoor pilot for NCIS) in the television show JAG, and has appeared in every episode of NCIS, in addition to being featured on the show"s spin-off, NCIS: Los Angeles.