The show revolves around a group of young Federal Bureau of Investigation recruits, who are training at the FBI Training Academy in Quantico, Virginia.
The 33-year-old "Mary Kom" star took to Twitter to share the trivia about her role. She posted a photo of her character's identification card on the show.
"Alex is Quantico top recruit. She instantly reads people and instinctively trusts few. She is fiercely competitive and naturally gifted," reads the details on the ID-card.
The series will premiere in the US on Sunday and Priyanka got the much-needed boost from her family as mother Madhu Chopra and brother Siddharth visited her on the show's sets.
"One day to go... Needed some family love! So happy to have @madhuchopra @Iamsidchopra with me on the eve of #Quantico," she captioned a photo with her brother.