Clara Oswald, portrayed by Jenna Coleman in Doctor Who, is a spirited and resourceful companion to the Eleventh and Twelfth Doctors. Introduced as the "impossible girl" due to her recurring appearances throughout the Doctor's timeline, Clara's character is deeply intertwined with the show's mythology. Initially a bright, adventurous nanny with a knack for problem-solving, she later becomes a schoolteacher and an integral part of the Doctor's adventures. Known for her quick wit, bravery, and deep empathy, Clara challenges and inspires the Doctor while maintaining a sense of independence and agency. Her story arc explores themes of identity, sacrifice, and the consequences of curiosity, culminating in a poignant and bittersweet departure that solidifies her as one of the most memorable and complex companions in the show's history.