Jenna Maroney
Jenna Maroney, born Yustrepa Gronkowitz on February 24, 1969, is a fictional character on the American television series 30 Rock. Portrayed by Jane Krakowski, Maroney is a vain, self-absorbed, and narcissistic former child star who is the head writer for the show's fictional sketch comedy show, TGS with Tracy Jordan. Despite her lack of talent and experience, Maroney is fiercely ambitious and determined to succeed in show business. She is also fiercely loyal to her friends and colleagues, and will do anything to protect them, even if it means sacrificing her own career.