Christian Marie Serratos ( sə-RAH-tohss; née Bernardi; born September 21, 1990) is an American actress, who is best known for portraying Rosita Espinosa in AMC's The Walking Dead TV series, based on the comic book of the same name. She is also known for playing Suzie Crabgrass in the Nickelodeon series Ned's Declassified School Survival Guide...